12=5x-30+x

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Solution for 12=5x-30+x equation: 



12=5x-30+x

We move all terms to the left:

12-(5x-30+x)=0

We add all the numbers together, and all the variables

-(6x-30)+12=0

We get rid of parentheses

-6x+30+12=0

We add all the numbers together, and all the variables

-6x+42=0

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

-6x=-42

x=-42/-6

x=+7

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