90=42+(2x-8)

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Solution for 90=42+(2x-8) equation: 



90=42+(2x-8)

We move all terms to the left:

90-(42+(2x-8))=0



We calculate terms in parentheses: -(42+(2x-8)), so:

42+(2x-8)

determiningTheFunctionDomain
(2x-8)+42

We get rid of parentheses

2x-8+42

We add all the numbers together, and all the variables

2x+34

Back to the equation:

-(2x+34)



We get rid of parentheses

-2x-34+90=0

We add all the numbers together, and all the variables

-2x+56=0

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

-2x=-56

x=-56/-2

x=+28

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