2(b-3)=12

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Solution for 2(b-3)=12 equation: 



2(b-3)=12

We move all terms to the left:

2(b-3)-(12)=0

We multiply parentheses

2b-6-12=0

We add all the numbers together, and all the variables

2b-18=0

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

2b=18

b=18/2

b=9

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