Answer:
Step 2: Subtraction Property of Equality
Step-by-step explanation:
40 - 15x = 5x + 70
- 5x - 5x
______________
40 - 20x = 70
-40 - 40
___________
−20x = 30
____ __
−20 −20
x = −1½
* You deal with the variables and coefficients first before the initial values, plus, use inverse operations when moving terms to one side.
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