1. Solving Two-Step Equations
Integrated Math I

2. What is a Two-Step Equation?
An equation that requires two steps to solve

3. Examples of Two-Step Equations
y/4 + 3 = 12
5n + 4 = 6
n/2 – 6 = 4

4. yes no yes Is this a 2 step equation? 2x + 5 = -12 x + 7 = 20

5. Steps for Solving Two-Step Equations
Solve for any Addition or Subtraction on the variable side of equation by “undoing” the operation from both sides of the equation.
Solve any Multiplication or Division from variable side of equation by “undoing” the operation from both sides of the equation.

6. Don’t Forget!!!! Opposite Operations
Addition 
Subtraction
Multiplication 
Division

7. Ex. 1: Solve 4x – 5 = 11 +5 +5 4x 16 4 4
-Draw line down the EQUAL sign! x = 4
-Add 5 to BOTH sides!
-Simplify
-Divide by 4
-Simplify

8. Try These Examples
2x – 5 = 17
3y + 7 = 25

9. 5n – 2 = 38
12b + 4 = 28

10. Ready to Move on?

11. Ex. 2: Solve x/3 + 4 = 9
x/3 + 4 = 9 -4 -4
(3)
x/3 5
(3) x = 15

12. Try these examples!
x/5 – 3 = 8
c/7 + 4 = 9