4-7(-3-x)=81

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



4-7(-3-x)=81

We move all terms to the left:

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

We add all the numbers together, and all the variables

-7(-1x-3)+4-81=0

We add all the numbers together, and all the variables

-7(-1x-3)-77=0

We multiply parentheses

7x+21-77=0

We add all the numbers together, and all the variables

7x-56=0

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

7x=56

x=56/7

x=8

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