90=(3x+6)+(7x-18)

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Solution for 90=(3x+6)+(7x-18) equation: 



90=(3x+6)+(7x-18)

We move all terms to the left:

90-((3x+6)+(7x-18))=0



We calculate terms in parentheses: -((3x+6)+(7x-18)), so:

(3x+6)+(7x-18)

We get rid of parentheses

3x+7x+6-18

We add all the numbers together, and all the variables

10x-12

Back to the equation:

-(10x-12)



We get rid of parentheses

-10x+12+90=0

We add all the numbers together, and all the variables

-10x+102=0

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

-10x=-102

x=-102/-10

x=10+1/5

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