7x-90=(x+20)

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Solution for 7x-90=(x+20) equation: 



7x-90=(x+20)

We move all terms to the left:

7x-90-((x+20))=0



We calculate terms in parentheses: -((x+20)), so:

(x+20)

We get rid of parentheses

x+20

Back to the equation:

-(x+20)



We get rid of parentheses

7x-x-20-90=0

We add all the numbers together, and all the variables

6x-110=0

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

6x=110

x=110/6

x=18+1/3

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