2b+7b=45

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Solution for 2b+7b=45 equation: 



2b+7b=45

We move all terms to the left:

2b+7b-(45)=0

We add all the numbers together, and all the variables

9b-45=0

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

9b=45

b=45/9

b=5

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