90=(3x+9)+(2x-4)

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Solution for 90=(3x+9)+(2x-4) equation: 



90=(3x+9)+(2x-4)

We move all terms to the left:

90-((3x+9)+(2x-4))=0



We calculate terms in parentheses: -((3x+9)+(2x-4)), so:

(3x+9)+(2x-4)

We get rid of parentheses

3x+2x+9-4

We add all the numbers together, and all the variables

5x+5

Back to the equation:

-(5x+5)



We get rid of parentheses

-5x-5+90=0

We add all the numbers together, and all the variables

-5x+85=0

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

-5x=-85

x=-85/-5

x=+17

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