-3(-x+1)=9+7x

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Solution for -3(-x+1)=9+7x equation: 



-3(-x+1)=9+7x

We move all terms to the left:

-3(-x+1)-(9+7x)=0

We add all the numbers together, and all the variables

-3(-1x+1)-(7x+9)=0

We multiply parentheses

3x-(7x+9)-3=0

We get rid of parentheses

3x-7x-9-3=0

We add all the numbers together, and all the variables

-4x-12=0

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

-4x=12

x=12/-4

x=-3

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