71=120-(15+x+7.50)

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Solution for 71=120-(15+x+7.50) equation: 



71=120-(15+x+7.50)

We move all terms to the left:

71-(120-(15+x+7.50))=0

We add all the numbers together, and all the variables

-(120-(x+22.5))+71=0



We calculate terms in parentheses: -(120-(x+22.5)), so:

120-(x+22.5)

determiningTheFunctionDomain
-(x+22.5)+120

We get rid of parentheses

-x-22.5+120

We add all the numbers together, and all the variables

-1x+97.5

Back to the equation:

-(-1x+97.5)



We get rid of parentheses

1x-97.5+71=0

We add all the numbers together, and all the variables

x-26.5=0

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

x=26.5

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