90=102+(x+6)+(x+15)

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Solution for 90=102+(x+6)+(x+15) equation: 



90=102+(x+6)+(x+15)

We move all terms to the left:

90-(102+(x+6)+(x+15))=0



We calculate terms in parentheses: -(102+(x+6)+(x+15)), so:

102+(x+6)+(x+15)

determiningTheFunctionDomain
(x+6)+(x+15)+102

We get rid of parentheses

x+x+6+15+102

We add all the numbers together, and all the variables

2x+123

Back to the equation:

-(2x+123)



We get rid of parentheses

-2x-123+90=0

We add all the numbers together, and all the variables

-2x-33=0

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

-2x=33

x=33/-2

x=-16+1/2

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