12+x=3x+8

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Solution for 12+x=3x+8 equation: 



12+x=3x+8

We move all terms to the left:

12+x-(3x+8)=0

We get rid of parentheses

x-3x-8+12=0

We add all the numbers together, and all the variables

-2x+4=0

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

-2x=-4

x=-4/-2

x=+2

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