91-12=13b+16

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Solution for 91-12=13b+16 equation: 



91-12=13b+16

We move all terms to the left:

91-12-(13b+16)=0

We add all the numbers together, and all the variables

-(13b+16)+79=0

We get rid of parentheses

-13b-16+79=0

We add all the numbers together, and all the variables

-13b+63=0

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

-13b=-63

b=-63/-13

b=4+11/13

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