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dimaraw [331]
3 years ago
6

- 2x - 147 = 123 + 7x

Mathematics
2 answers:
k0ka [10]3 years ago
7 0
-2x - 147 = 123 + 7x
Add 147 on both sides
-2x = 270 + 7x
Subtract 7x on both sides
-9x = 270
Divide -9x on both sides
X = -30
worty [1.4K]3 years ago
6 0

Answer:

<h2>x = -30</h2>

Step-by-step explanation:

-2x-147=123+7x\qquad\text{add 147 to both sides}\\\\-2x-147+147=123+147+7x\\\\-2x=270+7x\qquad\text{subtract }\ 7x\ \text{from both sides}\\\\-2x-7x=270+7x-7x\\\\-9x=270\qquad\text{divide both sides by (-9)}\\\\\dfrac{-9x}{-9}=\dfrac{270}{-9}\\\\x=-30

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