3(-8+7x)=81

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Solution for 3(-8+7x)=81 equation: 



3(-8+7x)=81

We move all terms to the left:

3(-8+7x)-(81)=0

We add all the numbers together, and all the variables

3(7x-8)-81=0

We multiply parentheses

21x-24-81=0

We add all the numbers together, and all the variables

21x-105=0

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

21x=105

x=105/21

x=5

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