21+8b=93

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Solution for 21+8b=93 equation: 



21+8b=93

We move all terms to the left:

21+8b-(93)=0

We add all the numbers together, and all the variables

8b-72=0

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

8b=72

b=72/8

b=9

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