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

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



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

We move all terms to the left:

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

We add all the numbers together, and all the variables

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

We multiply parentheses

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

We get rid of parentheses

4x-4x+21-28+7=0

We add all the numbers together, and all the variables

=0

x=0/1

x=0

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