b/13-4b/13=9/13

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Solution for b/13-4b/13=9/13 equation: 



b/13-4b/13=9/13

We move all terms to the left:

b/13-4b/13-(9/13)=0

We add all the numbers together, and all the variables

b/13-4b/13-(+9/13)=0

We get rid of parentheses

b/13-4b/13-9/13=0

We multiply all the terms by the denominator


b-4b-9=0

We add all the numbers together, and all the variables

-3b-9=0

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

-3b=9

b=9/-3

b=-3

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