90=3x+(8x+2)

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Solution for 90=3x+(8x+2) equation: 



90=3x+(8x+2)

We move all terms to the left:

90-(3x+(8x+2))=0



We calculate terms in parentheses: -(3x+(8x+2)), so:

3x+(8x+2)

We get rid of parentheses

3x+8x+2

We add all the numbers together, and all the variables

11x+2

Back to the equation:

-(11x+2)



We get rid of parentheses

-11x-2+90=0

We add all the numbers together, and all the variables

-11x+88=0

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

-11x=-88

x=-88/-11

x=+8

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