-8b+5=21

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Solution for -8b+5=21 equation: 



-8b+5=21

We move all terms to the left:

-8b+5-(21)=0

We add all the numbers together, and all the variables

-8b-16=0

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

-8b=16

b=16/-8

b=-2

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