-7(3x+7)=-21x-49

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Solution for -7(3x+7)=-21x-49 equation: 



-7(3x+7)=-21x-49

We move all terms to the left:

-7(3x+7)-(-21x-49)=0

We multiply parentheses

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

We get rid of parentheses

-21x+21x+49-49=0

We add all the numbers together, and all the variables

=0

x=0/1

x=0

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