20+8b=-19-7b+12b

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Solution for 20+8b=-19-7b+12b equation: 



20+8b=-19-7b+12b

We move all terms to the left:

20+8b-(-19-7b+12b)=0

We add all the numbers together, and all the variables

8b-(5b-19)+20=0

We get rid of parentheses

8b-5b+19+20=0

We add all the numbers together, and all the variables

3b+39=0

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

3b=-39

b=-39/3

b=-13

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