-21-4x=-3(-6x+7)

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Solution for -21-4x=-3(-6x+7) equation: 



-21-4x=-3(-6x+7)

We move all terms to the left:

-21-4x-(-3(-6x+7))=0



We calculate terms in parentheses: -(-3(-6x+7)), so:

-3(-6x+7)

We multiply parentheses

18x-21

Back to the equation:

-(18x-21)



We get rid of parentheses

-4x-18x+21-21=0

We add all the numbers together, and all the variables

-22x=0

x=0/-22

x=0

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