81=105-(5+w+7.5)

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Solution for 81=105-(5+w+7.5) equation: 



81=105-(5+w+7.5)

We move all terms to the left:

81-(105-(5+w+7.5))=0

We add all the numbers together, and all the variables

-(105-(w+12.5))+81=0



We calculate terms in parentheses: -(105-(w+12.5)), so:

105-(w+12.5)

determiningTheFunctionDomain
-(w+12.5)+105

We get rid of parentheses

-w-12.5+105

We add all the numbers together, and all the variables

-1w+92.5

Back to the equation:

-(-1w+92.5)



We get rid of parentheses

1w-92.5+81=0

We add all the numbers together, and all the variables

w-11.5=0

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

w=11.5

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