9(r-84)=81

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Solution for 9(r-84)=81 equation: 



9(r-84)=81

We move all terms to the left:

9(r-84)-(81)=0

We multiply parentheses

9r-756-81=0

We add all the numbers together, and all the variables

9r-837=0

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

9r=837

r=837/9

r=93

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