This document provides instructions and examples for solving two-step equations. It explains that the two steps are: 1) add or subtract on both sides, and 2) multiply or divide on both sides. It then provides examples of solving equations using these two steps, showing the process of isolating the variable and using the inverse operation. Finally, it gives some practice problems for the reader to solve two-step equations.

1. Two Step Equations Step One: Add or Subtract on both sides Step Two: Multiply or Divide on both sides. in-class practice items For chapter 3.3

2. following steps Find the variable. What is the operation? Use the inverse operation on both sides Work down. r + 18 = - 7 r + 18 = - 7 r + 18 = - 7 - 18 -18 r + 0 = -25 r = -25

3. following steps Find the variable . What is the operation? Use the inverse operation on both sides Work down. 6.3r = - 7 6.3 r = - 7 6.3r = - 7 6.3 6.3 1r = -1.1 r = -1.1 1

4. Order of two-step equations. Isolate the variable that is attached by division or multiplication. Use the inverse operation on both sides Work down. Isolate the variable. 7x - 5 = -54 +5 +5 7x + 0 = -49 7x = -49 7 7 1 x = - 7 x = - 7 1

5. Practice the order 5x+9=39 9p+11 = -7 3 + 2x = 21 12 = 9x - 6 -8m – 12 = 20 8p + 15 = 87 47 = 2f – 3 16 = -5w - 9

6. Practice the steps 5x+9=39 -8m – 12 = 20

7. Practice answers 5x+9=39 -8m – 12 = 20

8. Practice the equations 9p+11 = -7 8p + 15 = 87

9. Practice answers 9p+11 = -7 8p + 15 = 87

10. What’s the order? Add 22, then multiply by 5 Subtract 3.2, then multiply by -5 Add 1, then multiply by 10

11. Work the Steps

12. Work the Steps +22 +22 -3.2 -3.2 +1 +1