81=3x.

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Solution for 81=3x. equation: 



81=3x.

We move all terms to the left:

81-(3x.)=0

We add all the numbers together, and all the variables

-(+3x.)+81=0

We get rid of parentheses

-3x.+81=0

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

-3x.=-81

x=-81/1

x=-81

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