Equations
Download as PPTX, PDF
0 likes200 views
This document discusses different types of equations including true equations, false equations, and equations with unknown variables. It provides examples of each type of equation and notes that true equations use the equal sign (=) correctly and can be solved to produce a true statement, while false equations cannot be solved as they are not true statements. Equations with unknown variables contain letters like x, a, or d in place of a number, and these unknowns are called variables.
Equations
- 1. Equations
- 2. Equations true equations false equations Unknown equations
- 3. Equations 1. 35 牒 7 = 5 2. 25 + 12 25 牒 12 3. 7 牒 8 > 50 4. 20 + 17 = + 20 The symbol = is read as is equal to or equals
- 5. 1. 35 牒 7 = 5 2. 25 + 12 25 牒 12 3. 7 牒 8 > 50 4. 20 + 17 = + 20 There is = from 1 and 4 we call equation
- 6. Exercise1 1. 11 12 = 132 2. 14 + 8 < 20 + 5 3. 23 18 4. 100 歎 = 5 5. 25 + >
- 7. True equation 1) 1 year = 12 months 2) 60 minutes = 1 hour 3) 1 week = 7 days 4) 1 year = 120 days 5) 45 + 89 12 = 122 True equation False equation
- 8. Equations with unknown X + 15 = 30 46 A = 22 D 歎 8 = 14 unknown unknown unknown The unknown is called variable