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3 years ago

-85 - 8x =2x + 115 anyone know how to do this??

2 answers:

8 0

-85 - 8x = 2x + 115
-85 + 85 - 8x = 2x + 115 + 85
-8x = 2x + 200
-8x - 2x = 2x - 2x + 200
-10x = 200
-10x/-10 = 200/-10
X = -20

garik1379 [7]3 years ago

7 0

Answer: x= -20

Step-by-step explanation:

Add 85 85 to both sides.

-8x=2x+115+85−8x=2x+115+85

Simplify 2x+115+852x+115+85 to 2x+2002x+200.

-8x=2x+200−8x=2x+200

Subtract 2x2x from both sides.

-8x-2x=200−8x−2x=200

Simplify -8x-2x−8x−2x to -10x−10x.

-10x=200−10x=200

Divide both sides by -10−10.

x=-\frac{200}{10}x=−

200

Simplify \frac{200}{10}

200

to 20 20.

x= - 20

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