12b+20=13b

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Solution for 12b+20=13b equation: 



12b+20=13b

We move all terms to the left:

12b+20-(13b)=0

We add all the numbers together, and all the variables

-1b+20=0

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

-b=-20

b=-20/-1

b=+20

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