-39-3x=81-7x

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Solution for -39-3x=81-7x equation: 



-39-3x=81-7x

We move all terms to the left:

-39-3x-(81-7x)=0

We add all the numbers together, and all the variables

-3x-(-7x+81)-39=0

We get rid of parentheses

-3x+7x-81-39=0

We add all the numbers together, and all the variables

4x-120=0

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

4x=120

x=120/4

x=30

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