(5x+9)=81

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Solution for (5x+9)=81 equation: 



(5x+9)=81

We move all terms to the left:

(5x+9)-(81)=0

We get rid of parentheses

5x+9-81=0

We add all the numbers together, and all the variables

5x-72=0

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

5x=72

x=72/5

x=14+2/5

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