90=(8x+9)+(7x+6)

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Solution for 90=(8x+9)+(7x+6) equation: 



90=(8x+9)+(7x+6)

We move all terms to the left:

90-((8x+9)+(7x+6))=0



We calculate terms in parentheses: -((8x+9)+(7x+6)), so:

(8x+9)+(7x+6)

We get rid of parentheses

8x+7x+9+6

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+75=0

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

-15x=-75

x=-75/-15

x=+5

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