-12=-2b-1

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Solution for -12=-2b-1 equation: 



-12=-2b-1

We move all terms to the left:

-12-(-2b-1)=0

We get rid of parentheses

2b+1-12=0

We add all the numbers together, and all the variables

2b-11=0

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

2b=11

b=11/2

b=5+1/2

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