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Sietmas de 4x4

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Edgar Mata
Edgar Mata

The document contains a system of linear equations with variables x1, x2, x3, x4. There are 28 sets of 4 equations each, with coefficients on the variables and constants on the right-hand side. The equations are laid out in a matrix format with the coefficients presented in a table.

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-5 -4 -3 -5 1 E1 - 5 x1 + 2 x2 - 4 x3 - 5 x4 = + 54 E2 - 1 x1 + 2 x2 - 2 x3 + 8 x4 = - 37 E3 - 6 x1 + 7 x2 + 5 x3 - 3 x4 = +2 E4 + 8 x1 - 4 x2 + 2 x3 + 4 x4 = - 50 +2 +9 -3 -6 2 E1 - 2 x1 + 5 x2 - 9 x3 - 6 x4 = + 104 E2 + 7 x1 + 6 x2 + 7 x3 + 7 x4 = +5 E3 + 2 x1 + 1 x2 + 5 x3 + 5 x4 = - 32 E4 + 5 x1 - 5 x2 - 3 x3 + 6 x4 = - 62 +4 -9 -3 -2 3 E1 + 2 x1 - 6 x2 + 4 x3 - 8 x4 = + 66 E2 + 2 x1 + 4 x2 + 2 x3 + 3 x4 = - 40 E3 + 7 x1 - 7 x2 - 5 x3 + 7 x4 = + 92 E4 - 9 x1 - 9 x2 + 9 x3 - 7 x4 = + 32 -3 +6 -9 -7 4 E1 + 5 x1 + 2 x2 + 5 x3 + 6 x4 = - 90 E2 - 1 x1 - 6 x2 + 4 x3 + 5 x4 = - 104 E3 - 3 x1 - 5 x2 - 7 x3 - 3 x4 = + 63 E4 + 2 x1 - 5 x2 - 9 x3 - 9 x4 = + 108
+3 +4 +2 +1 5 E1 + 4 x1 + 4 x2 - 9 x3 + 9 x4 = + 19 E2 + 3 x1 - 7 x2 - 7 x3 + 5 x4 = - 28 E3 + 1 x1 - 7 x2 - 9 x3 - 8 x4 = - 51 E4 + 1 x1 + 7 x2 + 7 x3 - 4 x4 = + 41 +9 -5 +4 +4 6 E1 - 2 x1 - 5 x2 + 4 x3 + 5 x4 = + 43 E2 - 3 x1 + 7 x2 - 1 x3 - 3 x4 = - 78 E3 - 2 x1 + 5 x2 + 7 x3 - 9 x4 = - 51 E4 + 3 x1 - 8 x2 - 4 x3 + 3 x4 = + 63 -4 +9 -8 +8 7 E1 - 7 x1 + 5 x2 - 4 x3 + 2 x4 = + 121 E2 + 8 x1 - 1 x2 - 2 x3 - 7 x4 = - 81 E3 + 7 x1 + 2 x2 + 8 x3 + 5 x4 = - 34 E4 + 4 x1 + 4 x2 + 4 x3 - 4 x4 = - 44 -4 +5 -3 -1 8 E1 + 1 x1 + 9 x2 - 8 x3 + 3 x4 = + 62 E2 + 2 x1 + 1 x2 + 9 x3 - 4 x4 = - 26 E3 + 3 x1 + 5 x2 + 8 x3 - 2 x4 = -9 E4 - 4 x1 + 3 x2 + 8 x3 - 3 x4 = + 10
-2 +6 +2 -2 9 E1 - 4 x1 + 7 x2 - 4 x3 - 5 x4 = + 52 E2 + 5 x 1 + 8 x2 - 7 x3 - 8 x4 = + 40 E3 - 7 x 1 + 7 x2 + 4 x3 - 8 x4 = + 80 E4 + 7 x 1 - 2 x2 - 5 x3 - 3 x4 = - 30 -5 -7 +5 +3 10 E1 - 7 x1 + 5 x2 - 5 x3 - 9 x4 = - 52 E2 - 4 x 1 + 8 x2 - 9 x3 - 9 x4 = - 108 E3 - 7 x 1 + 1 x2 + 3 x3 - 5 x4 = + 28 E4 - 4 x 1 - 8 x2 - 8 x3 + 7 x4 = + 57 +5 -5 +9 -8 11 E1 - 4 x1 + 2 x2 - 4 x3 - 2 x4 = - 50 E2 - 8 x 1 + 5 x2 - 3 x3 + 6 x4 = - 140 E3 + 7 x 1 + 9 x2 - 8 x3 - 6 x4 = - 34 E4 - 8 x 1 + 7 x2 - 3 x3 + 2 x4 = - 118 -5 +7 -6 -6 12 E1 + 3 x1 - 7 x2 - 3 x3 - 5 x4 = - 16 E2 - 2 x 1 - 6 x2 + 9 x3 - 9 x4 = - 32 E3 + 7 x 1 + 8 x2 + 1 x3 - 4 x4 = + 39 E4 + 4 x 1 - 2 x2 - 4 x3 - 1 x4 = -4
+2 -3 +5 +7 13 E1 + 4 x1 + 6 x2 - 8 x3 - 9 x4 = - 113 E2 + 4 x 1 - 6 x2 - 9 x3 - 8 x4 = - 75 E3 - 3 x 1 - 3 x2 + 5 x3 - 7 x4 = - 21 E4 - 2 x 1 - 2 x2 - 7 x3 - 7 x4 = - 82 +4 +5 +2 -3 14 E1 - 8 x1 - 1 x2 - 7 x3 + 8 x4 = - 75 E2 - 9 x 1 + 7 x2 + 7 x3 - 4 x4 = + 25 E3 + 4 x 1 - 9 x2 - 1 x3 + 7 x4 = - 52 E4 - 5 x 1 + 7 x2 + 7 x3 - 5 x4 = + 44 +5 -4 +6 -4 15 E1 - 5 x1 - 3 x2 + 5 x3 + 1 x4 = + 13 E2 - 7 x 1 - 6 x2 + 7 x3 + 8 x4 = -1 E3 - 3 x 1 - 3 x2 + 5 x3 - 7 x4 = + 55 E4 + 6 x 1 - 1 x2 - 7 x3 + 8 x4 = - 40 +7 -9 +6 +4 16 E1 - 7 x1 - 1 x2 - 5 x3 + 2 x4 = - 62 E2 - 5 x 1 + 1 x2 - 6 x3 - 2 x4 = - 88 E3 + 2 x 1 + 2 x2 - 4 x3 + 6 x4 = -4 E4 - 2 x 1 - 3 x2 + 3 x3 + 5 x4 = + 51
+3 -6 -3 -6 17 E1 - 2 x1 - 7 x2 + 4 x3 - 9 x4 = + 78 E2 - 6 x 1 + 8 x2 - 7 x3 - 2 x4 = - 33 E3 + 8 x 1 + 6 x2 + 6 x3 + 2 x4 = - 42 E4 + 7 x 1 - 3 x2 + 6 x3 + 4 x4 = -3 +1 +2 +2 -9 18 E1 + 9 x1 - 4 x2 - 8 x3 + 7 x4 = - 78 E2 + 4 x 1 - 6 x2 - 3 x3 - 2 x4 = +4 E3 - 7 x 1 + 9 x2 + 3 x3 - 9 x4 = + 98 E4 - 4 x 1 - 2 x2 + 8 x3 - 5 x4 = + 53 -7 -6 -9 +1 19 E1 + 4 x1 + 1 x2 - 8 x3 + 3 x4 = + 41 E2 - 7 x 1 + 2 x2 - 2 x3 + 8 x4 = + 63 E3 - 1 x 1 + 6 x2 - 6 x3 - 8 x4 = + 17 E4 + 4 x 1 - 9 x2 + 8 x3 - 1 x4 = - 47 +3 +2 -8 +3 20 E1 + 9 x1 + 8 x2 + 4 x3 - 3 x4 = +2 E2 - 4 x 1 - 2 x2 - 6 x3 - 4 x4 = + 20 E3 + 9 x 1 + 2 x2 + 3 x3 + 3 x4 = + 16 E4 - 4 x 1 + 5 x2 - 5 x3 + 5 x4 = + 53
+5 +8 +3 +9 21 E1 + 6 x1 - 6 x2 + 4 x3 - 3 x4 = - 33 E2 + 4 x 1 - 4 x2 - 7 x3 - 8 x4 = - 105 E3 + 6 x 1 + 2 x2 + 6 x3 + 2 x4 = + 82 E4 + 6 x 1 - 4 x2 + 9 x3 + 4 x4 = + 61 +4 -7 +5 +3 22 E1 - 6 x1 - 2 x2 - 5 x3 + 1 x4 = - 32 E2 - 4 x 1 - 1 x2 + 1 x3 + 3 x4 = +5 E3 - 9 x 1 - 7 x2 - 6 x3 - 2 x4 = - 23 E4 - 7 x 1 + 6 x2 - 6 x3 - 8 x4 = - 124 +4 -8 -4 -1 23 E1 - 1 x1 - 1 x2 + 6 x3 + 9 x4 = - 29 E2 - 5 x 1 + 5 x2 - 3 x3 + 6 x4 = - 54 E3 + 7 x 1 - 3 x2 + 5 x3 - 6 x4 = + 38 E4 + 3 x 1 - 3 x2 - 2 x3 + 3 x4 = + 41 +6 +5 +8 +4 24 E1 + 6 x1 + 4 x2 + 8 x3 - 8 x4 = + 88 E2 - 1 x 1 + 2 x2 + 3 x3 + 3 x4 = + 40 E3 + 7 x 1 - 3 x2 + 4 x3 - 8 x4 = + 27 E4 - 8 x 1 + 6 x2 + 7 x3 + 9 x4 = + 74
+2 +3 -6 +3 25 E1 + 6 x1 + 8 x2 + 5 x3 + 5 x4 = + 21 E2 + 8 x 1 + 5 x2 + 5 x3 + 1 x4 = +4 E3 + 2 x 1 + 2 x2 - 5 x3 + 3 x4 = + 49 E4 + 5 x 1 - 7 x2 + 9 x3 - 6 x4 = - 83 -9 +5 -5 -5 26 E1 - 7 x1 + 2 x2 - 1 x3 + 7 x4 = + 43 E2 + 6 x 1 + 6 x2 + 4 x3 - 4 x4 = - 24 E3 + 7 x 1 - 2 x2 - 9 x3 + 6 x4 = - 58 E4 - 4 x 1 + 3 x2 - 8 x3 - 5 x4 = + 116 +1 +5 -5 -6 27 E1 - 3 x1 - 5 x2 + 3 x3 + 7 x4 = - 85 E2 - 2 x 1 - 9 x2 + 2 x3 + 1 x4 = - 63 E3 - 6 x 1 + 4 x2 - 6 x3 + 7 x4 = +2 E4 + 7 x 1 - 7 x2 + 6 x3 - 6 x4 = - 22 +5 -7 -4 -2 28 E1 - 3 x1 + 7 x2 + 8 x3 + 7 x4 = - 110 E2 - 2 x 1 - 5 x2 + 6 x3 - 7 x4 = + 15 E3 - 4 x 1 + 8 x2 - 2 x3 - 1 x4 = - 66 E4 + 9 x 1 - 3 x2 + 5 x3 - 3 x4 = + 52
-4 -1 -7 +5 29 E1 - 5 x1 - 7 x2 + 4 x3 - 6 x4 = - 31 E2 + 6 x 1 + 2 x2 + 4 x3 - 2 x4 = - 64 E3 + 4 x 1 - 5 x2 - 7 x3 - 9 x4 = -7 E4 + 2 x 1 - 6 x2 + 6 x3 + 9 x4 = +1 +8 -4 -6 -5 30 E1 + 1 x1 - 5 x2 - 8 x3 + 3 x4 = + 61 E2 + 8 x 1 - 4 x2 - 7 x3 - 2 x4 = + 132 E3 - 9 x 1 - 9 x2 - 8 x3 + 4 x4 = -8 E4 - 3 x 1 - 7 x2 + 2 x3 + 6 x4 = - 38 +1 -5 +8 -5 31 E1 + 4 x1 + 2 x2 - 9 x3 + 2 x4 = - 88 E2 + 3 x 1 + 9 x2 + 5 x3 - 5 x4 = + 23 E3 - 2 x 1 + 3 x2 - 5 x3 + 7 x4 = - 92 E4 - 6 x 1 + 8 x2 + 7 x3 - 4 x4 = + 30 -3 -2 -6 -8 32 E1 + 6 x1 + 8 x2 - 7 x3 + 6 x4 = - 40 E2 - 2 x 1 - 3 x2 + 3 x3 + 3 x4 = - 30 E3 + 9 x 1 + 6 x2 + 7 x3 + 5 x4 = - 121 E4 + 7 x 1 + 9 x2 + 2 x3 - 3 x4 = - 27

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Sietmas de 4x4

  • 1. -5 -4 -3 -5 1 E1 - 5 x1 + 2 x2 - 4 x3 - 5 x4 = + 54 E2 - 1 x1 + 2 x2 - 2 x3 + 8 x4 = - 37 E3 - 6 x1 + 7 x2 + 5 x3 - 3 x4 = +2 E4 + 8 x1 - 4 x2 + 2 x3 + 4 x4 = - 50 +2 +9 -3 -6 2 E1 - 2 x1 + 5 x2 - 9 x3 - 6 x4 = + 104 E2 + 7 x1 + 6 x2 + 7 x3 + 7 x4 = +5 E3 + 2 x1 + 1 x2 + 5 x3 + 5 x4 = - 32 E4 + 5 x1 - 5 x2 - 3 x3 + 6 x4 = - 62 +4 -9 -3 -2 3 E1 + 2 x1 - 6 x2 + 4 x3 - 8 x4 = + 66 E2 + 2 x1 + 4 x2 + 2 x3 + 3 x4 = - 40 E3 + 7 x1 - 7 x2 - 5 x3 + 7 x4 = + 92 E4 - 9 x1 - 9 x2 + 9 x3 - 7 x4 = + 32 -3 +6 -9 -7 4 E1 + 5 x1 + 2 x2 + 5 x3 + 6 x4 = - 90 E2 - 1 x1 - 6 x2 + 4 x3 + 5 x4 = - 104 E3 - 3 x1 - 5 x2 - 7 x3 - 3 x4 = + 63 E4 + 2 x1 - 5 x2 - 9 x3 - 9 x4 = + 108
  • 2. +3 +4 +2 +1 5 E1 + 4 x1 + 4 x2 - 9 x3 + 9 x4 = + 19 E2 + 3 x1 - 7 x2 - 7 x3 + 5 x4 = - 28 E3 + 1 x1 - 7 x2 - 9 x3 - 8 x4 = - 51 E4 + 1 x1 + 7 x2 + 7 x3 - 4 x4 = + 41 +9 -5 +4 +4 6 E1 - 2 x1 - 5 x2 + 4 x3 + 5 x4 = + 43 E2 - 3 x1 + 7 x2 - 1 x3 - 3 x4 = - 78 E3 - 2 x1 + 5 x2 + 7 x3 - 9 x4 = - 51 E4 + 3 x1 - 8 x2 - 4 x3 + 3 x4 = + 63 -4 +9 -8 +8 7 E1 - 7 x1 + 5 x2 - 4 x3 + 2 x4 = + 121 E2 + 8 x1 - 1 x2 - 2 x3 - 7 x4 = - 81 E3 + 7 x1 + 2 x2 + 8 x3 + 5 x4 = - 34 E4 + 4 x1 + 4 x2 + 4 x3 - 4 x4 = - 44 -4 +5 -3 -1 8 E1 + 1 x1 + 9 x2 - 8 x3 + 3 x4 = + 62 E2 + 2 x1 + 1 x2 + 9 x3 - 4 x4 = - 26 E3 + 3 x1 + 5 x2 + 8 x3 - 2 x4 = -9 E4 - 4 x1 + 3 x2 + 8 x3 - 3 x4 = + 10
  • 3. -2 +6 +2 -2 9 E1 - 4 x1 + 7 x2 - 4 x3 - 5 x4 = + 52 E2 + 5 x 1 + 8 x2 - 7 x3 - 8 x4 = + 40 E3 - 7 x 1 + 7 x2 + 4 x3 - 8 x4 = + 80 E4 + 7 x 1 - 2 x2 - 5 x3 - 3 x4 = - 30 -5 -7 +5 +3 10 E1 - 7 x1 + 5 x2 - 5 x3 - 9 x4 = - 52 E2 - 4 x 1 + 8 x2 - 9 x3 - 9 x4 = - 108 E3 - 7 x 1 + 1 x2 + 3 x3 - 5 x4 = + 28 E4 - 4 x 1 - 8 x2 - 8 x3 + 7 x4 = + 57 +5 -5 +9 -8 11 E1 - 4 x1 + 2 x2 - 4 x3 - 2 x4 = - 50 E2 - 8 x 1 + 5 x2 - 3 x3 + 6 x4 = - 140 E3 + 7 x 1 + 9 x2 - 8 x3 - 6 x4 = - 34 E4 - 8 x 1 + 7 x2 - 3 x3 + 2 x4 = - 118 -5 +7 -6 -6 12 E1 + 3 x1 - 7 x2 - 3 x3 - 5 x4 = - 16 E2 - 2 x 1 - 6 x2 + 9 x3 - 9 x4 = - 32 E3 + 7 x 1 + 8 x2 + 1 x3 - 4 x4 = + 39 E4 + 4 x 1 - 2 x2 - 4 x3 - 1 x4 = -4
  • 4. +2 -3 +5 +7 13 E1 + 4 x1 + 6 x2 - 8 x3 - 9 x4 = - 113 E2 + 4 x 1 - 6 x2 - 9 x3 - 8 x4 = - 75 E3 - 3 x 1 - 3 x2 + 5 x3 - 7 x4 = - 21 E4 - 2 x 1 - 2 x2 - 7 x3 - 7 x4 = - 82 +4 +5 +2 -3 14 E1 - 8 x1 - 1 x2 - 7 x3 + 8 x4 = - 75 E2 - 9 x 1 + 7 x2 + 7 x3 - 4 x4 = + 25 E3 + 4 x 1 - 9 x2 - 1 x3 + 7 x4 = - 52 E4 - 5 x 1 + 7 x2 + 7 x3 - 5 x4 = + 44 +5 -4 +6 -4 15 E1 - 5 x1 - 3 x2 + 5 x3 + 1 x4 = + 13 E2 - 7 x 1 - 6 x2 + 7 x3 + 8 x4 = -1 E3 - 3 x 1 - 3 x2 + 5 x3 - 7 x4 = + 55 E4 + 6 x 1 - 1 x2 - 7 x3 + 8 x4 = - 40 +7 -9 +6 +4 16 E1 - 7 x1 - 1 x2 - 5 x3 + 2 x4 = - 62 E2 - 5 x 1 + 1 x2 - 6 x3 - 2 x4 = - 88 E3 + 2 x 1 + 2 x2 - 4 x3 + 6 x4 = -4 E4 - 2 x 1 - 3 x2 + 3 x3 + 5 x4 = + 51
  • 5. +3 -6 -3 -6 17 E1 - 2 x1 - 7 x2 + 4 x3 - 9 x4 = + 78 E2 - 6 x 1 + 8 x2 - 7 x3 - 2 x4 = - 33 E3 + 8 x 1 + 6 x2 + 6 x3 + 2 x4 = - 42 E4 + 7 x 1 - 3 x2 + 6 x3 + 4 x4 = -3 +1 +2 +2 -9 18 E1 + 9 x1 - 4 x2 - 8 x3 + 7 x4 = - 78 E2 + 4 x 1 - 6 x2 - 3 x3 - 2 x4 = +4 E3 - 7 x 1 + 9 x2 + 3 x3 - 9 x4 = + 98 E4 - 4 x 1 - 2 x2 + 8 x3 - 5 x4 = + 53 -7 -6 -9 +1 19 E1 + 4 x1 + 1 x2 - 8 x3 + 3 x4 = + 41 E2 - 7 x 1 + 2 x2 - 2 x3 + 8 x4 = + 63 E3 - 1 x 1 + 6 x2 - 6 x3 - 8 x4 = + 17 E4 + 4 x 1 - 9 x2 + 8 x3 - 1 x4 = - 47 +3 +2 -8 +3 20 E1 + 9 x1 + 8 x2 + 4 x3 - 3 x4 = +2 E2 - 4 x 1 - 2 x2 - 6 x3 - 4 x4 = + 20 E3 + 9 x 1 + 2 x2 + 3 x3 + 3 x4 = + 16 E4 - 4 x 1 + 5 x2 - 5 x3 + 5 x4 = + 53
  • 6. +5 +8 +3 +9 21 E1 + 6 x1 - 6 x2 + 4 x3 - 3 x4 = - 33 E2 + 4 x 1 - 4 x2 - 7 x3 - 8 x4 = - 105 E3 + 6 x 1 + 2 x2 + 6 x3 + 2 x4 = + 82 E4 + 6 x 1 - 4 x2 + 9 x3 + 4 x4 = + 61 +4 -7 +5 +3 22 E1 - 6 x1 - 2 x2 - 5 x3 + 1 x4 = - 32 E2 - 4 x 1 - 1 x2 + 1 x3 + 3 x4 = +5 E3 - 9 x 1 - 7 x2 - 6 x3 - 2 x4 = - 23 E4 - 7 x 1 + 6 x2 - 6 x3 - 8 x4 = - 124 +4 -8 -4 -1 23 E1 - 1 x1 - 1 x2 + 6 x3 + 9 x4 = - 29 E2 - 5 x 1 + 5 x2 - 3 x3 + 6 x4 = - 54 E3 + 7 x 1 - 3 x2 + 5 x3 - 6 x4 = + 38 E4 + 3 x 1 - 3 x2 - 2 x3 + 3 x4 = + 41 +6 +5 +8 +4 24 E1 + 6 x1 + 4 x2 + 8 x3 - 8 x4 = + 88 E2 - 1 x 1 + 2 x2 + 3 x3 + 3 x4 = + 40 E3 + 7 x 1 - 3 x2 + 4 x3 - 8 x4 = + 27 E4 - 8 x 1 + 6 x2 + 7 x3 + 9 x4 = + 74
  • 7. +2 +3 -6 +3 25 E1 + 6 x1 + 8 x2 + 5 x3 + 5 x4 = + 21 E2 + 8 x 1 + 5 x2 + 5 x3 + 1 x4 = +4 E3 + 2 x 1 + 2 x2 - 5 x3 + 3 x4 = + 49 E4 + 5 x 1 - 7 x2 + 9 x3 - 6 x4 = - 83 -9 +5 -5 -5 26 E1 - 7 x1 + 2 x2 - 1 x3 + 7 x4 = + 43 E2 + 6 x 1 + 6 x2 + 4 x3 - 4 x4 = - 24 E3 + 7 x 1 - 2 x2 - 9 x3 + 6 x4 = - 58 E4 - 4 x 1 + 3 x2 - 8 x3 - 5 x4 = + 116 +1 +5 -5 -6 27 E1 - 3 x1 - 5 x2 + 3 x3 + 7 x4 = - 85 E2 - 2 x 1 - 9 x2 + 2 x3 + 1 x4 = - 63 E3 - 6 x 1 + 4 x2 - 6 x3 + 7 x4 = +2 E4 + 7 x 1 - 7 x2 + 6 x3 - 6 x4 = - 22 +5 -7 -4 -2 28 E1 - 3 x1 + 7 x2 + 8 x3 + 7 x4 = - 110 E2 - 2 x 1 - 5 x2 + 6 x3 - 7 x4 = + 15 E3 - 4 x 1 + 8 x2 - 2 x3 - 1 x4 = - 66 E4 + 9 x 1 - 3 x2 + 5 x3 - 3 x4 = + 52
  • 8. -4 -1 -7 +5 29 E1 - 5 x1 - 7 x2 + 4 x3 - 6 x4 = - 31 E2 + 6 x 1 + 2 x2 + 4 x3 - 2 x4 = - 64 E3 + 4 x 1 - 5 x2 - 7 x3 - 9 x4 = -7 E4 + 2 x 1 - 6 x2 + 6 x3 + 9 x4 = +1 +8 -4 -6 -5 30 E1 + 1 x1 - 5 x2 - 8 x3 + 3 x4 = + 61 E2 + 8 x 1 - 4 x2 - 7 x3 - 2 x4 = + 132 E3 - 9 x 1 - 9 x2 - 8 x3 + 4 x4 = -8 E4 - 3 x 1 - 7 x2 + 2 x3 + 6 x4 = - 38 +1 -5 +8 -5 31 E1 + 4 x1 + 2 x2 - 9 x3 + 2 x4 = - 88 E2 + 3 x 1 + 9 x2 + 5 x3 - 5 x4 = + 23 E3 - 2 x 1 + 3 x2 - 5 x3 + 7 x4 = - 92 E4 - 6 x 1 + 8 x2 + 7 x3 - 4 x4 = + 30 -3 -2 -6 -8 32 E1 + 6 x1 + 8 x2 - 7 x3 + 6 x4 = - 40 E2 - 2 x 1 - 3 x2 + 3 x3 + 3 x4 = - 30 E3 + 9 x 1 + 6 x2 + 7 x3 + 5 x4 = - 121 E4 + 7 x 1 + 9 x2 + 2 x3 - 3 x4 = - 27