-x+7(5x-3)=-21

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Solution for -x+7(5x-3)=-21 equation: 



-x+7(5x-3)=-21

We move all terms to the left:

-x+7(5x-3)-(-21)=0

We add all the numbers together, and all the variables

-1x+7(5x-3)+21=0

We multiply parentheses

-1x+35x-21+21=0

We add all the numbers together, and all the variables

34x=0

x=0/34

x=0

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