90=(5x+4)+(2x+9)

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Solution for 90=(5x+4)+(2x+9) equation: 



90=(5x+4)+(2x+9)

We move all terms to the left:

90-((5x+4)+(2x+9))=0



We calculate terms in parentheses: -((5x+4)+(2x+9)), so:

(5x+4)+(2x+9)

We get rid of parentheses

5x+2x+4+9

We add all the numbers together, and all the variables

7x+13

Back to the equation:

-(7x+13)



We get rid of parentheses

-7x-13+90=0

We add all the numbers together, and all the variables

-7x+77=0

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

-7x=-77

x=-77/-7

x=+11

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