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

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



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

We move all terms to the left:

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

We add all the numbers together, and all the variables

-(-4(6x-7))+28=0



We calculate terms in parentheses: -(-4(6x-7)), so:

-4(6x-7)

We multiply parentheses

-24x+28

Back to the equation:

-(-24x+28)



We get rid of parentheses

24x-28+28=0

We add all the numbers together, and all the variables

24x=0

x=0/24

x=0

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