21b+75=747

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Solution for 21b+75=747 equation: 



21b+75=747

We move all terms to the left:

21b+75-(747)=0

We add all the numbers together, and all the variables

21b-672=0

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

21b=672

b=672/21

b=32

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