-90=3(5x+5)

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Solution for -90=3(5x+5) equation: 



-90=3(5x+5)

We move all terms to the left:

-90-(3(5x+5))=0



We calculate terms in parentheses: -(3(5x+5)), so:

3(5x+5)

We multiply parentheses

15x+15

Back to the equation:

-(15x+15)



We get rid of parentheses

-15x-15-90=0

We add all the numbers together, and all the variables

-15x-105=0

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

-15x=105

x=105/-15

x=-7

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