2b=20-9-3b

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Solution for 2b=20-9-3b equation: 



2b=20-9-3b

We move all terms to the left:

2b-(20-9-3b)=0

We add all the numbers together, and all the variables

2b-(-3b+11)=0

We get rid of parentheses

2b+3b-11=0

We add all the numbers together, and all the variables

5b-11=0

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

5b=11

b=11/5

b=2+1/5

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