-2b+9=-9+b

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Solution for -2b+9=-9+b equation: 



-2b+9=-9+b

We move all terms to the left:

-2b+9-(-9+b)=0

We add all the numbers together, and all the variables

-2b-(b-9)+9=0

We get rid of parentheses

-2b-b+9+9=0

We add all the numbers together, and all the variables

-3b+18=0

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

-3b=-18

b=-18/-3

b=+6

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