(x+9)=81

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Solution for (x+9)=81 equation: 



(x+9)=81

We move all terms to the left:

(x+9)-(81)=0

We get rid of parentheses

x+9-81=0

We add all the numbers together, and all the variables

x-72=0

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

x=72

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