Arithmetic: Subtraction of Fractions

Problem	Minuend	Subtrahend	Difference
1	1/16	8/15	-113/240
2	2/5	1/5	1/5
3	8/21	8/21	0
4	2/15	1/16	17/240
5	7/18	1/12	11/36
6	2/9	6/7	-40/63
7	3/5	11/12	-19/60
8	1/9	8/9	-7/9
9	8/9	6/7	2/63
10	8/15	5/22	101/330
11	8/21	1/24	19/56
12	7/24	1/18	17/72
13	5/24	7/20	-17/120
14	5/7	3/20	79/140
15	8/15	1/16	113/240
16	4/21	7/24	-17/168
17	1/21	4/15	-23/105
18	1/14	7/20	-39/140
19	7/9	11/18	1/6
20	1/15	4/21	-13/105
21	3/14	4/21	1/42
22	5/12	2/21	9/28
23	5/18	5/24	5/72
24	3/10	1/12	13/60
25	1/12	1/14	1/84
26	8/21	5/12	-1/28
27	1/16	5/22	-29/176
28	7/12	3/10	17/60
29	5/16	5/24	5/48
30	7/20	1/24	37/120
31	3/14	7/12	-31/84
32	5/18	1/12	7/36
33	7/12	7/24	7/24
34	7/8	3/14	37/56
35	3/5	10/21	13/105
36	1/12	5/18	-7/36
37	7/8	8/9	-1/72
38	3/20	4/21	-17/420
39	5/24	1/20	19/120
40	1/8	3/4	-5/8
41	7/24	8/21	-5/56
42	3/20	8/21	-97/420
43	3/10	1/10	1/5
44	1/22	1/24	1/264
45	3/20	7/18	-43/180
46	3/22	7/18	-25/99
47	1/10	5/18	-8/45
48	2/3	8/3	-2
49	1/16	7/18	-47/144
50	1/24	1/10	-7/120