7 over 20 is greater than 4 over 15
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3/5=21/35 4/7=20/35 3/5 is bigger by a small bit
It can be anything you like.-3 is bigger than -4 but (-3)/(-4) = 3/4 is a positive fraction which is less than 1.4 is bigger than 3 but 4/3 is a positive fraction which is greater than 1.3 is bigger than -4 but 3/(-4) = -3/4 is a negative fraction which is greater than -1.4 is bigger than -3 but 4/(-3) = -4/3 is a negative fraction which is less than -1.
You can subtract the bigger fraction by the smaller fraction and then put a minus sign in front of the answer.
0.2667
the lowest common denominator is 75 13/15 = 65/75 22/25 = 66/75 so 22/25 is bigger