3b+3b=126

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Solution for 3b+3b=126 equation: 



3b+3b=126

We move all terms to the left:

3b+3b-(126)=0

We add all the numbers together, and all the variables

6b-126=0

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

6b=126

b=126/6

b=21

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