12b-(-9b)+-2=19

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Solution for 12b-(-9b)+-2=19 equation: 



12b-(-9b)+-2=19

We move all terms to the left:

12b-(-9b)+-2-(19)=0

determiningTheFunctionDomain
12b-(-9b)-2-19+=0

We add all the numbers together, and all the variables

12b-(-9b)=0

We get rid of parentheses

12b+9b=0

We add all the numbers together, and all the variables

21b=0

b=0/21

b=0

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