-31=81-2(y+5)

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Solution for -31=81-2(y+5) equation: 



-31=81-2(y+5)

We move all terms to the left:

-31-(81-2(y+5))=0



We calculate terms in parentheses: -(81-2(y+5)), so:

81-2(y+5)

determiningTheFunctionDomain
-2(y+5)+81

We multiply parentheses

-2y-10+81

We add all the numbers together, and all the variables

-2y+71

Back to the equation:

-(-2y+71)



We get rid of parentheses

2y-71-31=0

We add all the numbers together, and all the variables

2y-102=0

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

2y=102

y=102/2

y=51

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