8x+12=-2x+42

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Solution for 8x+12=-2x+42 equation: 



8x+12=-2x+42

We move all terms to the left:

8x+12-(-2x+42)=0

We get rid of parentheses

8x+2x-42+12=0

We add all the numbers together, and all the variables

10x-30=0

We move all terms containing x to the left, all other terms to the right

10x=30

x=30/10

x=3

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