12=-4x-20

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Solution for 12=-4x-20 equation: 



12=-4x-20

We move all terms to the left:

12-(-4x-20)=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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