7 out of 10 is bigger
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2/3 = 10/15 2/5 = 6/15 10 is greater than 6. 2/3 is greater than 2/5
5, 6, 10, 15, and 30 are all factors of 30 that are greater than 3 .
-5
9 out of 10
8/12 and 2/5 can be expressed as 2/3 and 2/5. The LCM of 3 and 5 is 15. Hence 2/3 and 2/5 may be represented with the common denominator 15 as 10/15 and 6/15. Since 10/15 is greater than 6/15, 2/3 is greater than 2/5 and so the original 8/12 is greater than the original 2/5