-3x-15=-3(-2x-4)

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Solution for -3x-15=-3(-2x-4) equation: 



-3x-15=-3(-2x-4)

We move all terms to the left:

-3x-15-(-3(-2x-4))=0



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

-3(-2x-4)

We multiply parentheses

6x+12

Back to the equation:

-(6x+12)



We get rid of parentheses

-3x-6x-12-15=0

We add all the numbers together, and all the variables

-9x-27=0

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

-9x=27

x=27/-9

x=-3

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