SOLUTION: what is 3 times the difference of 12 4/5 and 6 2/3 ?

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Question 319266: what is 3 times the difference of 12 4/5 and 6 2/3 ?
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
First, convert from mixed number to fraction.
12%2B4%2F5=60%2F5%2B4%2F5=64%2F5
6%2B2%2F3=18%2F3%2B2%2F3=20%2F3
Need a common denominator to find the difference 15=3%2A5
64%2F5%2A%283%2F3%29=192%2F15
20%2F3%2A%285%2F5%29=100%2F15
The difference is then,
D=%28192-100%29%2F15
D=92%2F15
Three times the difference,
3D=92%2F5