-3x-81=6x

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Solution for -3x-81=6x equation: 



-3x-81=6x

We move all terms to the left:

-3x-81-(6x)=0

We add all the numbers together, and all the variables

-9x-81=0

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

-9x=81

x=81/-9

x=-9

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