SOLUTION: 18 3/7-12 1/3

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Question 1017875: 18 3/7-12 1/3
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
18 3/7-12 1/3
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= 129/7 - 37/3
= (129*3 - 7*37)/21
= 128/21