b-39+b-20=b+12

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Solution for b-39+b-20=b+12 equation: 



b-39+b-20=b+12

We move all terms to the left:

b-39+b-20-(b+12)=0

We add all the numbers together, and all the variables

2b-(b+12)-59=0

We get rid of parentheses

2b-b-12-59=0

We add all the numbers together, and all the variables

b-71=0

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

b=71

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