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

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



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

We move all terms to the left:

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

We multiply parentheses

-7x-(-7x-21)-21=0

We get rid of parentheses

-7x+7x+21-21=0

We add all the numbers together, and all the variables

=0

x=0/1

x=0

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