12-x+2x=3x+6

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Solution for 12-x+2x=3x+6 equation: 



12-x+2x=3x+6

We move all terms to the left:

12-x+2x-(3x+6)=0

We add all the numbers together, and all the variables

x-(3x+6)+12=0

We get rid of parentheses

x-3x-6+12=0

We add all the numbers together, and all the variables

-2x+6=0

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

-2x=-6

x=-6/-2

x=+3

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