1. Two-Step Equations
Mrs. Book

2. Two-Step Equations A two-step equation involves two operations.
3x – 2 = 4
Get the term with the variable alone on one side of the equation and with a coefficient of 1.

3. Solve the Equation 3x = 6 3x - 2 = 4 3x -2 + 2 = 4 + 2 3x -2 + 2 = 6
Add 2 to both sides to get 3x by itself
3x = 4 + 2
3x = 6
Simplify
3x = 6
Divide by the coefficient to get the variable by itself
3x = 6
x = 2

4. Check Your Answer 3x – 2 = 4 Solution to the equation; x = 2
Substitute your solution into the equation to check your answer
3 (2) – 2 = 4
6 – 2 = 4
4 = 4

5. Solve the equation. Check your answer.

6. Solve the equation. Check your answer.
X = 243

7. Solve the equation. Check your answer.
X = 3

8. Write an equation to model each situation. Then solve your equation.
Suppose you walk at the rate of 210 ft/min. You need to walk 10,000 ft. How many more minutes will it take you to finish if you have already walked 550 ft?
210m = 10,000
m = 45

9. Justify each step

10. Essential Question
How do I apply inverse operation to solve problems with fractions and decimals?