Your mom ;p
1/3 minus 2/5 is -1/15
You asked about "to the minus" so we will talk about integers to the minus. Such as 2 to the minus 2. This means 1 over 2 to the positive two. In general a to the minus b is 1/a to the b
Unfortunately, 2 over 2 minus 1 equals 5 over 6 is just a wrong answer! If it is 2 over 2, minus 1, the answer is that it equals zero. If it is 2, over 2 minus 1, the answer is that it equals 2.
2/3 minus 1/6 = 1/2 or 0.5
2/9 minus 5/27 = 1/27
6/14 minus 2/7 = 3/7 - 2/7 = 1/7
2 minus 2/5 plus 1/2 minus 4 = -1.9
16/21 minus two equals -1 5/21
2/5 minus 1/15 is 1/3
1/2 minus 3/7 is 1/14
3/6, or 1/2
2 − 1/6 = 15/6