异分母分数加减法,200道~400道,要一步计算的!

好不容易弄了400个.累啊.
31/49 - 39/24
13/44 + 41/48
33/29 - 47/4
46/41 + 45/10
48/47 - 5/34
13/37 + 19/24
28/2 - 26/15
37/33 + 5/11
38/22 - 42/17
26/4 + 10/41
34/19 - 14/36
37/3 + 21/34
48/43 - 31/2
42/37 + 31/29
48/8 - 14/45
32/10 + 36/48
4/50 - 26/13
27/28 + 6/46
3/28 - 43/20
21/47 + 24/45
27/12 - 29/41
16/40 + 23/48
42/38 - 28/24
37/50 + 1/24
1/43 - 13/44
38/27 + 46/41
28/47 - 11/27
22/9 + 41/43
11/46 - 36/1
21/41 + 7/8
16/14 - 5/24
17/2 + 26/7
46/25 - 47/18
29/28 + 12/2
25/9 - 13/32
33/3 + 30/5
13/2 - 6/27
2/32 + 21/16
13/27 - 33/2
28/35 + 4/1
5/37 - 21/17
4/50 + 12/14
13/37 - 8/39
33/20 + 16/50
19/6 - 15/12
15/13 + 38/5
21/5 - 18/45
14/47 + 18/46
28/26 - 27/10
5/12 + 24/10
40/1 - 29/16
44/25 + 2/28
49/50 - 42/17
44/1 + 13/29
21/4 - 14/20
19/38 + 29/48
42/29 - 16/36
38/47 + 39/27
15/11 - 18/35
38/45 + 8/34
35/36 - 12/34
31/38 + 24/31
24/21 - 31/43
29/5 + 12/20
7/17 - 41/42
3/6 + 47/21
29/29 - 13/9
10/38 + 38/35
15/17 - 24/12
5/26 + 45/46
36/8 - 44/13
22/9 + 19/22
22/34 - 29/18
28/16 + 3/41
35/42 - 43/40
10/42 + 2/50
8/3 - 38/26
13/1 + 39/23
23/45 - 43/28
6/40 + 33/50
45/8 - 4/13
15/28 + 11/29
18/23 - 29/30
23/23 + 15/15
29/21 - 46/47
29/45 + 33/17
25/20 - 6/48
8/49 + 5/45
7/17 - 2/28
38/50 + 30/12
3/13 - 46/16
4/4 + 36/41
37/27 - 26/16
44/6 + 2/4
17/34 - 17/31
35/20 + 10/18
10/22 - 24/41
31/44 + 17/36
14/17 - 21/13
14/6 + 27/7
23/30 - 26/33
39/3 + 30/50
8/31 - 18/37
2/16 + 19/50
29/7 - 2/40
35/29 + 20/5
49/10 - 37/28
35/13 + 47/23
5/31 - 44/49
40/37 + 33/43
46/46 - 40/17
37/19 + 1/43
16/43 - 45/31
22/32 + 44/24
15/38 - 32/33
40/4 + 43/50
12/9 - 47/47
39/18 + 27/43
26/14 - 6/7
17/3 + 18/21
33/8 - 28/29
11/2 + 15/33
23/43 - 23/3
42/36 + 42/43
20/24 - 9/26
23/25 + 33/17
5/28 - 15/37
41/44 + 16/39
21/6 - 45/35
31/33 + 8/20
13/7 - 20/3
19/44 + 17/7
44/29 - 37/33
18/45 + 32/29
46/2 - 3/1
33/24 + 21/14
15/26 - 47/37
47/42 + 5/22
31/31 - 11/48
16/27 + 8/24
4/31 - 24/20
12/27 + 18/46
2/8 - 38/6
35/26 + 49/33
38/37 - 49/15
11/45 + 13/28
29/48 - 47/8
44/39 + 26/41
15/20 - 25/21
32/13 + 8/10
4/49 - 17/18
50/4 + 33/6
25/45 - 32/10
11/42 + 11/43
41/48 - 16/6
48/35 + 33/9
8/11 - 1/37
36/14 + 40/8
22/26 - 28/16
23/45 + 20/24
31/30 - 46/47
7/45 + 28/25
33/49 - 42/40
39/6 + 5/27
19/42 - 3/3
5/12 + 20/49
2/42 - 6/28
20/19 + 28/25
48/43 - 37/34
8/46 + 3/32
20/37 - 48/23
5/9 + 31/30
15/17 - 3/44
16/50 + 36/27
43/16 - 20/29
16/21 + 30/6
40/48 - 37/46
49/20 + 7/33
26/31 - 36/8
38/8 + 33/37
16/3 - 5/32
27/23 + 34/25
34/46 - 5/46
40/41 + 44/5
48/2 - 50/27
31/8 + 8/3
11/1 - 50/40
43/9 + 38/27
11/34 - 8/25
15/9 + 17/22
32/11 - 22/12
6/14 + 45/45
29/26 - 37/27
23/43 + 2/48
17/1 - 26/21
4/11 + 30/27
16/22 - 7/50
14/2 + 10/48
5/38 - 3/5
18/34 + 25/25
12/28 - 13/4
3/12 + 18/21
32/39 - 40/1
6/40 + 36/38
8/27 - 8/23
16/1 + 47/14
4/22 - 7/45
20/10 + 24/14
32/43 - 8/9
11/3 + 26/45
14/31 - 35/18
11/3 + 38/43
40/24 - 19/42
2/29 + 26/4
37/1 - 18/45
2/18 + 42/27
24/47 - 15/21
19/32 + 23/32
10/1 - 43/37
14/4 + 1/36
26/27 - 27/15
31/9 + 18/1
48/34 - 34/34
13/28 + 26/34
13/3 - 19/14
18/20 + 10/12
38/11 - 11/3
42/12 + 1/40
25/9 - 44/15
41/49 + 44/17
10/29 - 25/18
19/19 + 6/27
3/42 - 1/39
48/43 + 16/5
44/21 - 6/21
28/24 + 8/35
7/31 - 8/50
24/50 + 35/22
41/49 - 44/19
10/8 + 28/17
50/17 - 48/33
12/18 + 1/1
39/37 - 20/47
25/25 + 9/42
15/19 - 8/18
25/47 + 44/49
49/39 - 5/4
28/43 + 16/2
42/44 - 22/30
37/10 + 15/41
33/38 - 20/36
17/15 + 30/49
11/6 - 40/44
28/10 + 4/20
45/23 - 29/35
41/30 + 25/40
46/22 - 16/48
8/46 + 31/35
24/1 - 43/33
11/42 + 27/6
31/1 - 25/41
48/41 + 2/40
35/30 - 40/44
20/17 + 49/33
39/16 - 49/50
39/24 + 5/27
13/10 - 20/11
50/8 + 50/14
12/44 - 22/42
6/46 + 16/48
8/41 - 46/46
2/25 + 45/10
41/29 - 16/28
35/8 + 28/7
10/12 - 16/46
34/17 + 30/6
14/32 - 25/35
13/42 + 25/5
47/19 - 24/27
13/3 + 20/5
22/26 - 43/23
20/16 + 24/23
39/12 - 31/46
47/15 + 9/38
22/41 - 16/32
15/20 + 31/39
9/12 - 37/50
37/22 + 6/14
35/13 - 8/37
43/36 + 16/22
28/11 - 49/36
44/39 + 19/30
24/7 - 43/14
4/39 + 31/16
26/15 - 31/15
31/9 + 6/11
24/33 - 50/46
12/33 + 46/28
45/42 - 50/8
7/41 + 50/1
8/24 - 28/44
48/19 + 40/37
29/25 - 39/45
46/48 + 33/17
13/27 - 44/47
32/8 + 20/18
44/39 - 9/23
4/25 + 4/29
50/6 - 7/9
5/7 + 22/27
27/43 - 1/28
12/21 + 3/7
20/43 - 8/34
49/32 + 30/3
46/3 - 42/31
40/9 + 31/6
5/39 - 43/13
45/36 + 16/20
14/43 - 12/7
34/16 + 48/15
15/27 - 9/46
4/46 + 47/31
33/7 - 16/31
27/38 + 5/14
4/1 - 34/24
13/38 + 20/18
38/21 - 45/50
35/23 + 36/4
14/26 - 25/42
32/2 + 33/29
10/13 - 23/45
47/19 + 42/39
34/15 - 33/13
30/31 + 9/1
5/2 - 30/6
32/23 + 3/42
3/13 - 40/10
50/39 + 21/8
50/14 - 49/27
5/14 + 25/34
21/7 - 5/14
13/20 + 32/19
44/27 - 21/17
24/3 + 30/30
28/10 - 28/19
6/39 + 28/43
13/19 - 16/2
41/12 + 47/18
50/27 - 11/13
30/26 + 13/41
33/12 - 29/25
48/48 + 6/12
21/50 - 42/37
30/16 + 2/8
9/44 - 27/30
45/1 + 9/24
27/5 - 20/48
16/7 + 15/21
4/23 - 9/4
1/11 + 33/6
37/37 - 50/39
50/30 + 41/38
19/46 - 24/40
2/6 + 46/48
39/3 - 34/29
19/37 + 13/32
6/30 - 30/1
18/41 + 43/18
12/48 - 33/45
42/12 + 1/34
19/33 - 40/21
49/25 + 32/33
19/44 - 44/30
5/37 + 13/1
35/14 - 5/26
47/46 + 17/46
41/46 - 34/25
14/18 + 42/1
31/24 - 8/12
45/50 + 33/7
1/11 - 14/14
32/39 + 3/37
50/19 - 35/42
19/47 + 4/48
27/37 - 33/17
25/11 + 48/14
41/16 - 1/26
10/22 + 12/26
20/4 - 14/4
6/3 + 41/41
37/34 - 48/20
22/37 + 22/26
42/18 - 7/28
43/29 + 41/48
32/29 - 39/13
49/27 + 9/16
33/13 - 41/40
20/42 + 27/36
4/8 - 4/31
18/11 + 40/35