1. Two-step equations Today’s Lesson: What: Why:
. . . so I can solve both multiplication and division two-step equations .
How:
. . . by taking accurate notes, participating in ALL practice activities, and completing IXL homework with a 70% or greater.

2. What two steps must we follow when solving a two-step equation?

3. two What are Two-Step Equations??
Two-step equations are equations that have __________ operations . In other words, there are TWO numbers on the same side with “x.”
two
How do we solve a two-step equation ??
Step One: Add or subtract (zero pairs) to get rid of the ______________________.
Step Two: Multiply or divide to get rid of the _______________________.
constant
coefficient

4. Multiplication Two-Step Equations:
Example: 3x = 26
+(-2) +(-2) (add “-2” to both sides to make zero pair)
3x = (re-write equation)
(divide by 3 on both sides)
x = 8

5. Multiplication Guided examples:

6. Your turn:
4) x = 20
5) = 12 – x
x = 5
x = 10

7. Division two-step equations:
Example: 𝑥 − = 13
+(-3) (- 3) (add “-3” to both sides to make zero pair)
𝑥 −2 = (re-write equation)
( −𝟐 𝟏 ) 𝑥 −2 = 10( −𝟐 𝟏 ) (multiply by “flip” on both sides)
x = -20

8. Division Guided examples: 1) 𝑥 2 + -7 = 11 2) 2 = 𝑥 −3 - 6 3)
𝑥 = 11 2)
2 = 𝑥 − 3)
𝑥 = -20
x = -24
x = 36
x = -62
# 3 is different Multiply on both sides by the denominator FIRST!

9. Your turn: 4) 𝑥+4 2 = -5 5) 21 = 𝑥 3 + -4 6) 3 + 𝑥 −5 = -7 x = 75
𝑥 = -5 5)
21 = 𝑥 6)
3 + 𝑥 −5 = -7
x = 75
x = -14
x = 50

10. Let’s check out some Modeling with
two-step Equations . . .
Math Playground Equation Tool

11. What two steps must we follow when solving a two-step equation?
Wrap-it-up/ summary:
What two steps must we follow when solving a two-step equation?

12. (show work on scratch paper)
Homework/ practice
Due by next class!
IXL: 7th Grade, S.6
(show work on scratch paper)

13. END OF LESSON