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

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



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

We move all terms to the left:

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

We multiply parentheses

-4x+16x-84-21=0

We add all the numbers together, and all the variables

12x-105=0

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

12x=105

x=105/12

x=8+3/4

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