-9=-4+b/2

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Solution for -9=-4+b/2 equation: 



-9=-4+b/2

We move all terms to the left:

-9-(-4+b/2)=0

We add all the numbers together, and all the variables

-(b/2-4)-9=0

We get rid of parentheses

-b/2+4-9=0

We multiply all the terms by the denominator


-b+4*2-9*2=0

We add all the numbers together, and all the variables

-1b-10=0

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

-b=10

b=10/-1

b=-10

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