The document contains 3 math puzzles with their solutions. Puzzle 1 has two ways to write the equation 7 + 7 + 7 = 21 as 747 + 7 = 754. Puzzle 2 shows that 77 + 7 = 84. Puzzle 3 lists the solutions to 479 = 20, 567 = 18, and 321 = 6.Read less
