-12=-20-9x

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Solution for -12=-20-9x equation: 



-12=-20-9x

We move all terms to the left:

-12-(-20-9x)=0

We add all the numbers together, and all the variables

-(-9x-20)-12=0

We get rid of parentheses

9x+20-12=0

We add all the numbers together, and all the variables

9x+8=0

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

9x=-8

x=-8/9

x=-8/9

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