Show:
Adding
Subtract
Mix of the 2
Mix of the 2
Mix of the 2
100
2/8 + 3/8
5/8
100

8/9 - 5/9

3/9

100

8/9 - 3/9

5/9

100

6/7 - 1/7

5/7

100

6/13 + 3/13

9/13

200

8/35 +  6/35

14/35

200
6/6 - 1/6
5/6
200

7/19 + 4/19

11/19

200

7/16 + 4/16

11/16 

200

7/9 - 5/9

2/9

300
3/16 + 4/16
7/16
300
35/78 + 37/78
72/78
300

35/67 -26/67

9/67

300

27/56 - 14/56

13/56

300

35/76 + 27/76

62/76

400
57/102 +36/102
93/102
400
75/127 +27/127
102/127
400

102/124 - 71/124

31/124

400

987/1099-25/1099

965/1099

400
99/100 - 64/100
35/100
500
137/194 + 32/194
169/194
500
62/198 + 72/198
134/198
500

17/208 + 75/208

92/208

500

203/215 - 87/215

116/215

500
346/757 - 259/757
87/757