13b-4b=9

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Solution for 13b-4b=9 equation: 



13b-4b=9

We move all terms to the left:

13b-4b-(9)=0

We add all the numbers together, and all the variables

9b-9=0

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

9b=9

b=9/9

b=1

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