-15=3(x-1)

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Solution for -15=3(x-1) equation: 



-15=3(x-1)

We move all terms to the left:

-15-(3(x-1))=0



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

3(x-1)

We multiply parentheses

3x-3

Back to the equation:

-(3x-3)



We get rid of parentheses

-3x+3-15=0

We add all the numbers together, and all the variables

-3x-12=0

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

-3x=12

x=12/-3

x=-4

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