2b+5=-6b-15

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Solution for 2b+5=-6b-15 equation: 



2b+5=-6b-15

We move all terms to the left:

2b+5-(-6b-15)=0

We get rid of parentheses

2b+6b+15+5=0

We add all the numbers together, and all the variables

8b+20=0

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

8b=-20

b=-20/8

b=-2+1/2

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