8=b-(-13)

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Solution for 8=b-(-13) equation: 



8=b-(-13)

We move all terms to the left:

8-(b-(-13))=0



We calculate terms in parentheses: -(b-(-13)), so:

b-(-13)

We add all the numbers together, and all the variables

b+13

Back to the equation:

-(b+13)



We get rid of parentheses

-b-13+8=0

We add all the numbers together, and all the variables

-1b-5=0

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

-b=5

b=5/-1

b=-5

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