-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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