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

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



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

We move all terms to the left:

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

We add all the numbers together, and all the variables

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

We multiply parentheses

21x-(x-9)-49=0

We get rid of parentheses

21x-x+9-49=0

We add all the numbers together, and all the variables

20x-40=0

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

20x=40

x=40/20

x=2

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