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

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Solution for 2(x-1)-21=-(3x+3) equation: 



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

We move all terms to the left:

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

We multiply parentheses

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



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

-(3x+3)

We get rid of parentheses

-3x-3

Back to the equation:

-(-3x-3)



We add all the numbers together, and all the variables

2x-(-3x-3)-23=0

We get rid of parentheses

2x+3x+3-23=0

We add all the numbers together, and all the variables

5x-20=0

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

5x=20

x=20/5

x=4

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