-x-21=4(3x-2)

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Solution for -x-21=4(3x-2) equation: 



-x-21=4(3x-2)

We move all terms to the left:

-x-21-(4(3x-2))=0

We add all the numbers together, and all the variables

-1x-(4(3x-2))-21=0



We calculate terms in parentheses: -(4(3x-2)), so:

4(3x-2)

We multiply parentheses

12x-8

Back to the equation:

-(12x-8)



We get rid of parentheses

-1x-12x+8-21=0

We add all the numbers together, and all the variables

-13x-13=0

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

-13x=13

x=13/-13

x=-1

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