9x+12=84+x

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Solution for 9x+12=84+x equation: 



9x+12=84+x

We move all terms to the left:

9x+12-(84+x)=0

We add all the numbers together, and all the variables

9x-(x+84)+12=0

We get rid of parentheses

9x-x-84+12=0

We add all the numbers together, and all the variables

8x-72=0

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

8x=72

x=72/8

x=9

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