2b+3b+20=-15b

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Solution for 2b+3b+20=-15b equation: 



2b+3b+20=-15b

We move all terms to the left:

2b+3b+20-(-15b)=0

We add all the numbers together, and all the variables

5b-(-15b)+20=0

We get rid of parentheses

5b+15b+20=0

We add all the numbers together, and all the variables

20b+20=0

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

20b=-20

b=-20/20

b=-1

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