90=(x+7)=(3x+3)

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



90=(x+7)=(3x+3)

We move all terms to the left:

90-((x+7))=0



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

(x+7)

We get rid of parentheses

x+7

Back to the equation:

-(x+7)



We get rid of parentheses

-x-7+90=0

We add all the numbers together, and all the variables

-1x+83=0

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

-x=-83

x=-83/-1

x=+83

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