x-7=3x+12

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Solution for x-7=3x+12 equation: 



x-7=3x+12

We move all terms to the left:

x-7-(3x+12)=0

We get rid of parentheses

x-3x-12-7=0

We add all the numbers together, and all the variables

-2x-19=0

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

-2x=19

x=19/-2

x=-9+1/2

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