9(b-89)=90

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Solution for 9(b-89)=90 equation: 



9(b-89)=90

We move all terms to the left:

9(b-89)-(90)=0

We multiply parentheses

9b-801-90=0

We add all the numbers together, and all the variables

9b-891=0

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

9b=891

b=891/9

b=99

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