15=-3(2x+-1)

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Solution for 15=-3(2x+-1) equation: 



15=-3(2x+-1)

We move all terms to the left:

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

We add all the numbers together, and all the variables

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



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

-3(2x-1)

We multiply parentheses

-6x+3

Back to the equation:

-(-6x+3)



We get rid of parentheses

6x-3+15=0

We add all the numbers together, and all the variables

6x+12=0

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

6x=-12

x=-12/6

x=-2

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