81=3+9x

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Solution for 81=3+9x equation: 



81=3+9x

We move all terms to the left:

81-(3+9x)=0

We add all the numbers together, and all the variables

-(9x+3)+81=0

We get rid of parentheses

-9x-3+81=0

We add all the numbers together, and all the variables

-9x+78=0

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

-9x=-78

x=-78/-9

x=8+2/3

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