3x-21=-3(-x+8)

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Solution for 3x-21=-3(-x+8) equation: 



3x-21=-3(-x+8)

We move all terms to the left:

3x-21-(-3(-x+8))=0

We add all the numbers together, and all the variables

3x-(-3(-1x+8))-21=0



We calculate terms in parentheses: -(-3(-1x+8)), so:

-3(-1x+8)

We multiply parentheses

3x-24

Back to the equation:

-(3x-24)



We get rid of parentheses

3x-3x+24-21=0

We add all the numbers together, and all the variables

3!=0

There is no solution for this equation

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