-25=-5x-5(-3x+21)

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Solution for -25=-5x-5(-3x+21) equation: 



-25=-5x-5(-3x+21)

We move all terms to the left:

-25-(-5x-5(-3x+21))=0



We calculate terms in parentheses: -(-5x-5(-3x+21)), so:

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

We multiply parentheses

-5x+15x-105

We add all the numbers together, and all the variables

10x-105

Back to the equation:

-(10x-105)



We get rid of parentheses

-10x+105-25=0

We add all the numbers together, and all the variables

-10x+80=0

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

-10x=-80

x=-80/-10

x=+8

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