-15=4x+3(2x-45)

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Solution for -15=4x+3(2x-45) equation: 



-15=4x+3(2x-45)

We move all terms to the left:

-15-(4x+3(2x-45))=0



We calculate terms in parentheses: -(4x+3(2x-45)), so:

4x+3(2x-45)

We multiply parentheses

4x+6x-135

We add all the numbers together, and all the variables

10x-135

Back to the equation:

-(10x-135)



We get rid of parentheses

-10x+135-15=0

We add all the numbers together, and all the variables

-10x+120=0

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

-10x=-120

x=-120/-10

x=+12

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