3(b+b)=12

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Solution for 3(b+b)=12 equation: 



3(b+b)=12

We move all terms to the left:

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

We add all the numbers together, and all the variables

3(+2b)-12=0

We multiply parentheses

6b-12=0

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

6b=12

b=12/6

b=2

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