3(-7x+7)=105

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Solution for 3(-7x+7)=105 equation: 



3(-7x+7)=105

We move all terms to the left:

3(-7x+7)-(105)=0

We multiply parentheses

-21x+21-105=0

We add all the numbers together, and all the variables

-21x-84=0

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

-21x=84

x=84/-21

x=-4

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