-12x-21=9x+6

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Solution for -12x-21=9x+6 equation: 



-12x-21=9x+6

We move all terms to the left:

-12x-21-(9x+6)=0

We get rid of parentheses

-12x-9x-6-21=0

We add all the numbers together, and all the variables

-21x-27=0

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

-21x=27

x=27/-21

x=-1+2/7

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