1. Equations Solving Equations

2. How does one find a solution? Use Inverse Operations. Addition  Subtraction Multiplication  Division Square  Square Root Cube  Cube Root And keep the equation balanced?

3. Use the inverse operation to solve the equation… m+4=29 - 4=-4 m =25 Given Inverse +  - Evaluate

4. Use the inverse operation to solve the equation… a – 7 = 15 + 7 = + 7 a =22 Given Inverse -  + Evaluate

5. Use the inverse operation to solve the equation… 2t = 8  2=  2 t = 4 Given Inverse *   Evaluate

6. Use the inverse operation to solve the equation… h = 2 3  3=  3 h = 6 Given Inverse   * Evaluate

7. Use the inverse operation to solve the equation… 3x + 4 = 19 But this time there are two operations to consider… Which do you use first? Order of operation?

8. Equations are not the same as expressions. 3x + 4 = 19 To solve an equation one will use the expressions order of operations BACKWARDS Addition or Subtraction Multiplication or Division Exponents Groupings/ Parentheses

9. Use the inverse operations to solve the equation… 3x + 4 = 19 - 4 = - 4 3x = 15  3=  3 x = 5 Given Inverse +   Evaluate Inverse *   Evaluate

10. Use the inverse operations to solve the equation… 5x – 4 = 2(x – 4) + 18

11. Use the inverse operations to solve the equation… -5x + 3 + 2x = 7x – 8 + 9x

12. TEST YOURSELF 1.x – 8 = 2 2 2. 3 (y + 4) = 36 3. (4x + 7) – 3(x + 5) = (2x – 3) + 3(2x+3)

13. Assignment 21 Pretest On-line