3b-1=4b-20

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Solution for 3b-1=4b-20 equation: 



3b-1=4b-20

We move all terms to the left:

3b-1-(4b-20)=0

We get rid of parentheses

3b-4b+20-1=0

We add all the numbers together, and all the variables

-1b+19=0

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

-b=-19

b=-19/-1

b=+19

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