4(x+12)=84

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Solution for 4(x+12)=84 equation: 



4(x+12)=84

We move all terms to the left:

4(x+12)-(84)=0

We multiply parentheses

4x+48-84=0

We add all the numbers together, and all the variables

4x-36=0

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

4x=36

x=36/4

x=9

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