8=b+(-4)

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Solution for 8=b+(-4) equation: 



8=b+(-4)

We move all terms to the left:

8-(b+(-4))=0



We calculate terms in parentheses: -(b+(-4)), so:

b+(-4)

We add all the numbers together, and all the variables

b-4

Back to the equation:

-(b-4)



We get rid of parentheses

-b+4+8=0

We add all the numbers together, and all the variables

-1b+12=0

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

-b=-12

b=-12/-1

b=+12

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