-9x-81=66-2x

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Solution for -9x-81=66-2x equation: 



-9x-81=66-2x

We move all terms to the left:

-9x-81-(66-2x)=0

We add all the numbers together, and all the variables

-9x-(-2x+66)-81=0

We get rid of parentheses

-9x+2x-66-81=0

We add all the numbers together, and all the variables

-7x-147=0

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

-7x=147

x=147/-7

x=-21

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