-1=-13+3b

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Solution for -1=-13+3b equation: 



-1=-13+3b

We move all terms to the left:

-1-(-13+3b)=0

We add all the numbers together, and all the variables

-(3b-13)-1=0

We get rid of parentheses

-3b+13-1=0

We add all the numbers together, and all the variables

-3b+12=0

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

-3b=-12

b=-12/-3

b=+4

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