B-4+6b=21

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Solution for B-4+6b=21 equation: 



-4+6B=21

We move all terms to the left:

-4+6B-(21)=0

We add all the numbers together, and all the variables

6B-25=0

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

6B=25

B=25/6

B=4+1/6

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