SOLUTION: 12+1/3a=20

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Question 253582: 12+1/3a=20
Answer by drk(1908) About Me  (Show Source):
You can put this solution on YOUR website!
Here is the question
12%2B1%2F3a=20
I don't know if a is in the numerator or denominator.
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case 1: in numerator.
12%2B%281%2F3%29a=20
step 1 - multiply by 3 to get
36%2Ba=60
step 2 - subtract 36 to get
a=24
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case 2:
12%2B1%2F%283a%29=20
step 1 - multiply by 3a to get
36a%2B1=60a
subtract 36a to get
1=24a
divide by 24 to get
1%2F24+=+a