21-2b=22

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Solution for 21-2b=22 equation: 



21-2b=22

We move all terms to the left:

21-2b-(22)=0

We add all the numbers together, and all the variables

-2b-1=0

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

-2b=1

b=1/-2

b=-1/2

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