3(9+x)=81

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Solution for 3(9+x)=81 equation: 



3(9+x)=81

We move all terms to the left:

3(9+x)-(81)=0

We add all the numbers together, and all the variables

3(x+9)-81=0

We multiply parentheses

3x+27-81=0

We add all the numbers together, and all the variables

3x-54=0

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

3x=54

x=54/3

x=18

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