12b-3=10b-9

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Solution for 12b-3=10b-9 equation: 



12b-3=10b-9

We move all terms to the left:

12b-3-(10b-9)=0

We get rid of parentheses

12b-10b+9-3=0

We add all the numbers together, and all the variables

2b+6=0

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

2b=-6

b=-6/2

b=-3

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