9x+81=2x+4

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Solution for 9x+81=2x+4 equation: 



9x+81=2x+4

We move all terms to the left:

9x+81-(2x+4)=0

We get rid of parentheses

9x-2x-4+81=0

We add all the numbers together, and all the variables

7x+77=0

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

7x=-77

x=-77/7

x=-11

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