-21-3x=-5(-x+1)

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Solution for -21-3x=-5(-x+1) equation: 



-21-3x=-5(-x+1)

We move all terms to the left:

-21-3x-(-5(-x+1))=0

We add all the numbers together, and all the variables

-3x-(-5(-1x+1))-21=0



We calculate terms in parentheses: -(-5(-1x+1)), so:

-5(-1x+1)

We multiply parentheses

5x-5

Back to the equation:

-(5x-5)



We get rid of parentheses

-3x-5x+5-21=0

We add all the numbers together, and all the variables

-8x-16=0

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

-8x=16

x=16/-8

x=-2

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