-9=-8+b/2

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Solution for -9=-8+b/2 equation: 



-9=-8+b/2

We move all terms to the left:

-9-(-8+b/2)=0

We add all the numbers together, and all the variables

-(b/2-8)-9=0

We get rid of parentheses

-b/2+8-9=0

We multiply all the terms by the denominator


-b+8*2-9*2=0

We add all the numbers together, and all the variables

-1b-2=0

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

-b=2

b=2/-1

b=-2

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