20+3b=13-7b=b=

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Solution for 20+3b=13-7b=b= equation: 



20+3b=13-7b=b=

We move all terms to the left:

20+3b-(13-7b)=0

We add all the numbers together, and all the variables

3b-(-7b+13)+20=0

We get rid of parentheses

3b+7b-13+20=0

We add all the numbers together, and all the variables

10b+7=0

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

10b=-7

b=-7/10

b=-7/10

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