-9b-1=89

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Solution for -9b-1=89 equation: 



-9b-1=89

We move all terms to the left:

-9b-1-(89)=0

We add all the numbers together, and all the variables

-9b-90=0

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

-9b=90

b=90/-9

b=-10

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