-7(3+4x)=-21+28x

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Solution for -7(3+4x)=-21+28x equation: 



-7(3+4x)=-21+28x

We move all terms to the left:

-7(3+4x)-(-21+28x)=0

We add all the numbers together, and all the variables

-7(4x+3)-(28x-21)=0

We multiply parentheses

-28x-(28x-21)-21=0

We get rid of parentheses

-28x-28x+21-21=0

We add all the numbers together, and all the variables

-56x=0

x=0/-56

x=0

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