12b+21=93b

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Solution for 12b+21=93b equation: 



12b+21=93b

We move all terms to the left:

12b+21-(93b)=0

We add all the numbers together, and all the variables

-81b+21=0

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

-81b=-21

b=-21/-81

b=7/27

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