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

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



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

We move all terms to the left:

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

We multiply parentheses

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

We get rid of parentheses

-3x-5x+21-21=0

We add all the numbers together, and all the variables

-8x=0

x=0/-8

x=0

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