90=(3x+2)+(12x-17)

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Solution for 90=(3x+2)+(12x-17) equation: 



90=(3x+2)+(12x-17)

We move all terms to the left:

90-((3x+2)+(12x-17))=0



We calculate terms in parentheses: -((3x+2)+(12x-17)), so:

(3x+2)+(12x-17)

We get rid of parentheses

3x+12x+2-17

We add all the numbers together, and all the variables

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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