x+12=7x+30

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Solution for x+12=7x+30 equation: 



x+12=7x+30

We move all terms to the left:

x+12-(7x+30)=0

We get rid of parentheses

x-7x-30+12=0

We add all the numbers together, and all the variables

-6x-18=0

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

-6x=18

x=18/-6

x=-3

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