b/2+9=21

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Solution for b/2+9=21 equation: 



b/2+9=21

We move all terms to the left:

b/2+9-(21)=0

We add all the numbers together, and all the variables

b/2-12=0

We multiply all the terms by the denominator


b-12*2=0

We add all the numbers together, and all the variables

b-24=0

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

b=24

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