90=x+(x+6)

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Solution for 90=x+(x+6) equation: 



90=x+(x+6)

We move all terms to the left:

90-(x+(x+6))=0



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

x+(x+6)

We get rid of parentheses

x+x+6

We add all the numbers together, and all the variables

2x+6

Back to the equation:

-(2x+6)



We get rid of parentheses

-2x-6+90=0

We add all the numbers together, and all the variables

-2x+84=0

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

-2x=-84

x=-84/-2

x=+42

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