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

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



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

We move all terms to the left:

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

We get rid of parentheses

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

We add all the numbers together, and all the variables

-1x+17=0

We move all terms containing x to the left, all other terms to the right

-x=-17

x=-17/-1

x=+17

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