9(7-x)=81

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Solution for 9(7-x)=81 equation: 



9(7-x)=81

We move all terms to the left:

9(7-x)-(81)=0

We add all the numbers together, and all the variables

9(-1x+7)-81=0

We multiply parentheses

-9x+63-81=0

We add all the numbers together, and all the variables

-9x-18=0

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

-9x=18

x=18/-9

x=-2

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