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

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



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

We move all terms to the left:

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

We add all the numbers together, and all the variables

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

We multiply parentheses

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

We get rid of parentheses

-28x-4x-21+21=0

We add all the numbers together, and all the variables

-32x=0

x=0/-32

x=0

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