Arithmetic: Subtraction of Fractions

Problem	Minuend	Subtrahend	Difference
1	5/12	7/12	-1/6
2	5/18	1/10	8/45
3	3/4	5/7	1/28
4	3/10	5/12	-7/60
5	7/18	1/21	43/126
6	2/21	8/15	-46/105
7	7/24	3/20	17/120
8	2/15	7/20	-13/60
9	3/22	3/22	0
10	3/22	1/14	5/77
11	8/9	1/9	7/9
12	3/14	1/20	23/140
13	7/18	3/22	25/99
14	2/15	5/14	-47/210
15	1/8	3/14	-5/56
16	3/10	1/24	31/120
17	1/12	7/20	-4/15
18	1/21	2/15	-3/35
19	3/20	1/10	1/20
20	3/20	7/24	-17/120
21	7/16	1/16	3/8
22	8/9	6/7	2/63
23	8/15	3/16	83/240
24	7/24	1/14	37/168
25	6/7	3/10	39/70
26	7/10	8/15	1/6
27	1/14	3/16	-13/112
28	7/12	5/21	29/84
29	1/9	2/9	-1/9
30	3/7	10/21	-1/21
31	7/24	1/14	37/168
32	7/10	7/10	0
33	6/7	7/12	23/84
34	7/15	7/22	49/330
35	7/18	1/24	25/72
36	5/18	2/15	13/90
37	5/8	2/15	59/120
38	8/9	5/7	11/63
39	7/24	1/14	37/168
40	3/10	1/14	8/35
41	1/12	7/18	-11/36
42	1/15	3/10	-7/30
43	5/14	1/12	23/84
44	7/12	1/18	19/36
45	7/8	10/21	67/168
46	7/22	5/12	-13/132
47	7/24	5/12	-1/8
48	3/10	5/18	1/45
49	7/18	1/20	61/180
50	6/7	4/7	2/7