they are composite numbers
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Make the lower number the same them compare, as in 4/15 and 2/5 becomes 4/15 and 6/15 from 2x3/5x3 or 6/15 Answer 6/15 is bigger than 4/15 i.e. 2/5 is bigger.
Let N = the fractionEquation: 6 = N * 15or15N/15= 6/15N = 6/15 6 is what fraction of 15
-6 -15 = -21
-15
15 × 6 = 90