12=-20+4x

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Solution for 12=-20+4x equation: 



12=-20+4x

We move all terms to the left:

12-(-20+4x)=0

We add all the numbers together, and all the variables

-(4x-20)+12=0

We get rid of parentheses

-4x+20+12=0

We add all the numbers together, and all the variables

-4x+32=0

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

-4x=-32

x=-32/-4

x=+8

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