-3(-7+7x)=126

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Solution for -3(-7+7x)=126 equation: 



-3(-7+7x)=126

We move all terms to the left:

-3(-7+7x)-(126)=0

We add all the numbers together, and all the variables

-3(7x-7)-126=0

We multiply parentheses

-21x+21-126=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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