9=-45/b

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Solution for 9=-45/b equation: 



9=-45/b

We move all terms to the left:

9-(-45/b)=0



Domain of the equation: b)!=0

b!=0/1

b!=0

b∈R



We get rid of parentheses

45/b+9=0

We multiply all the terms by the denominator


9*b+45=0

We add all the numbers together, and all the variables

9b+45=0

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

9b=-45

b=-45/9

b=-5

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