90=x+(5x+18)

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Solution for 90=x+(5x+18) equation:



90=x+(5x+18)
We move all terms to the left:
90-(x+(5x+18))=0
We calculate terms in parentheses: -(x+(5x+18)), so:
x+(5x+18)
We get rid of parentheses
x+5x+18
We add all the numbers together, and all the variables
6x+18
Back to the equation:
-(6x+18)
We get rid of parentheses
-6x-18+90=0
We add all the numbers together, and all the variables
-6x+72=0
We move all terms containing x to the left, all other terms to the right
-6x=-72
x=-72/-6
x=+12

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