90=(x-10)+(2x+7)

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Solution for 90=(x-10)+(2x+7) equation: 



90=(x-10)+(2x+7)

We move all terms to the left:

90-((x-10)+(2x+7))=0



We calculate terms in parentheses: -((x-10)+(2x+7)), so:

(x-10)+(2x+7)

We get rid of parentheses

x+2x-10+7

We add all the numbers together, and all the variables

3x-3

Back to the equation:

-(3x-3)



We get rid of parentheses

-3x+3+90=0

We add all the numbers together, and all the variables

-3x+93=0

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

-3x=-93

x=-93/-3

x=+31

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