3(4x+7)=81

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Solution for 3(4x+7)=81 equation: 



3(4x+7)=81

We move all terms to the left:

3(4x+7)-(81)=0

We multiply parentheses

12x+21-81=0

We add all the numbers together, and all the variables

12x-60=0

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

12x=60

x=60/12

x=5

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