-15=3(2-x)

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



-15=3(2-x)

We move all terms to the left:

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

We add all the numbers together, and all the variables

-(3(-1x+2))-15=0



We calculate terms in parentheses: -(3(-1x+2)), so:

3(-1x+2)

We multiply parentheses

-3x+6

Back to the equation:

-(-3x+6)



We get rid of parentheses

3x-6-15=0

We add all the numbers together, and all the variables

3x-21=0

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

3x=21

x=21/3

x=7

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