12 to 15 is greater than 5 to 9 because the numbers in the former are of higher value than the latter.
They can all be divided by three, which turns 12/15 into 4/5, and 9/12 into 3/4. 4/5 is bigger than 3/4.
9 over 12
5/12 is less than 9/12.
3, 6, 9, 12, 15
3/5 = 9/15 and is not equal to 12/15
9/12 = 3/4, or 15/20; 1/5 = 4/20.
9/12 = 3/4, or 15/20; 1/5 = 4/20.
5/9 = 60/108 factor out 12, top and bottom 12*5/12*9 eliminate 12; top and bottom 5/9 ------
6/8 = 9/12 5/6 = 10/12 So 5/6 is greater.
It is: 4/5 = 0.8 because 9/12 = 0.75
5/9 − 5/12 = 15/108 which simplifies to 5/36
4/5 = 0.8 5/7 ≈ 0.71 8/9 ≈ 0.89 10/12 ≈ 0.83 11/12 ≈ 0.92 Thus, the greater is 11/12. 11/12, 8/9, 10/12, 4/5, and 5/7.