B2+7b=30

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Solution for B2+7b=30 equation: 



2+7B=30

We move all terms to the left:

2+7B-(30)=0

We add all the numbers together, and all the variables

7B-28=0

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

7B=28

B=28/7

B=4

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