2x-30=x+12

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Solution for 2x-30=x+12 equation: 



2x-30=x+12

We move all terms to the left:

2x-30-(x+12)=0

We get rid of parentheses

2x-x-12-30=0

We add all the numbers together, and all the variables

x-42=0

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

x=42

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