3+b=-2b

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Solution for 3+b=-2b equation: 



3+b=-2b

We move all terms to the left:

3+b-(-2b)=0

We get rid of parentheses

b+2b+3=0

We add all the numbers together, and all the variables

3b+3=0

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

3b=-3

b=-3/3

b=-1

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