-12b-1=9-b

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Solution for -12b-1=9-b equation: 



-12b-1=9-b

We move all terms to the left:

-12b-1-(9-b)=0

We add all the numbers together, and all the variables

-12b-(-1b+9)-1=0

We get rid of parentheses

-12b+1b-9-1=0

We add all the numbers together, and all the variables

-11b-10=0

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

-11b=10

b=10/-11

b=-10/11

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