31=b-(-15)

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Solution for 31=b-(-15) equation: 



31=b-(-15)

We move all terms to the left:

31-(b-(-15))=0



We calculate terms in parentheses: -(b-(-15)), so:

b-(-15)

We add all the numbers together, and all the variables

b+15

Back to the equation:

-(b+15)



We get rid of parentheses

-b-15+31=0

We add all the numbers together, and all the variables

-1b+16=0

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

-b=-16

b=-16/-1

b=+16

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