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1. 1/2  1/3 = Answer: 1/6LCM = 6. So, 1/2  1/3 = 3/6  2/6 = 1/6.
2. 1/2  1/4 = Answer: 1/4LCM = 4. So, 1/2  1/4 = 2/4  1/4 = 1/4.
3. 1/2  1/5 = Answer: 3/10LCM = 10. So, 1/2  1/5 = 5/10  2/10 = 3/10.
4. 1/2  1/6 = Answer: 1/3LCM = 6. So, 1/2  1/6 = 3/6  1/6 = 2/6 = 1/3.
5. 1/2  1/7 = Answer: 5/14LCM = 14. So, 1/2  1/7 = 7/14  2/14 = 5/14.
6. 1/2  1/8 = Answer: 3/8LCM = 8. So, 1/2  1/8 = 4/8  1/8 = 3/8.
7. 1/2  1/9 = Answer: 7/18LCM = 18. So, 1/2  1/9 = 9/18  2/18 = 7/18.
8. 1/2  1/10 = Answer: 2/5LCM = 10. So, 1/2  1/10 = 5/10  1/10 = 4/10 = 2/5.
9. 1/2  1/11 = Answer: 9/22LCM = 22. So, 1/2  1/11 = 11/22  2/22 = 9/22.
10. 1/2  1/12 = Answer: 5/12LCM = 12. So, 1/2  1/12 = 6/12  1/12 = 5/12.
11. 1/3  1/4 = Answer: 1/12LCM = 12. So, 1/3  1/4 = 4/12  3/12 = 1/12.
12. 1/3  1/5 = Answer: 2/15LCM = 15. So, 1/3  1/5 = 5/15  3/15 = 2/15.
13. 1/3  1/6 = Answer: 1/6LCM = 6. So, 1/3  1/6 = 2/6  1/6 = 1/6.
14. 1/3  1/7 = Answer: 4/21LCM = 21. So, 1/3  1/7 = 7/21  3/21 = 4/21.
15. 1/3  1/8 = Answer: 5/24LCM = 24. So, 1/3  1/8 = 8/24  3/24 = 5/24.
16. 1/3  1/9 = Answer: 2/9LCM = 9. So, 1/3  1/9 = 3/9  1/9 = 2/9.
17. 1/3  1/10 = Answer: 7/30LCM = 30. So, 1/3  1/10 = 10/30  3/30 = 7/30.
18. 1/3  1/11 = Answer: 8/33LCM = 33. So, 1/3  1/11 = 11/33  3/33 = 8/33.
19. 1/3  1/12 = Answer: 1/4LCM = 12. So, 1/3  1/12 = 4/12  1/12 = 3/12 = 1/4.
20. 1/4  1/5 = Answer: 1/20LCM = 20. So, 1/4  1/5 = 5/20  4/20 = 1/20.
21. 1/4  1/6 = Answer: 1/12LCM = 12. So, 1/4  1/6 = 3/12  2/12 = 1/12.
22. 1/4  1/7 = Answer: 3/28LCM = 28. So, 1/4  1/7 = 7/28  4/28 = 3/28.
23. 1/4  1/8 = Answer: 1/8LCM = 8. So, 1/4  1/8 = 2/8  1/8 = 1/8.
24. 1/4  1/9 = Answer: 5/36LCM = 36. So, 1/4  1/9 = 9/36  4/36 = 5/36.
25. 1/4  1/10 = Answer: 3/20LCM = 20. So, 1/4  1/10 = 5/20  2/20 = 3/20.
26. 1/4  1/11 = Answer: 7/44LCM = 44. So, 1/4  1/11 = 11/44  4/44 = 7/44.
27. 1/4  1/12 = Answer: 1/6LCM = 12. So, 1/4  1/12 = 3/12  1/12 = 2/12 = 1/6.
28. 1/5  1/6 = Answer: 1/30LCM = 30. So, 1/5  1/6 = 6/30  5/30 = 1/30.
29. 1/5  1/7 = Answer: 2/35LCM = 35. So, 1/5  1/7 = 7/35  5/35 = 2/35.
30. 1/5  1/8 = Answer: 3/40LCM = 40. So, 1/5  1/8 = 8/40  5/40 = 3/40.
31. 1/5  1/9 = Answer: 4/45LCM = 45. So, 1/5  1/9 = 9/45  5/45 = 4/45.
32. 1/5  1/10 = Answer: 1/10LCM = 10. So, 1/5  1/10 = 2/10  1/10 = 1/10.
33. 1/5  1/11 = Answer: 6/55LCM = 55. So, 1/5  1/11 = 11/55  5/55 = 6/55.
34. 1/5  1/12 = Answer: 7/60LCM = 60. So, 1/5  1/12 = 12/60  5/60 = 7/60.
35. 1/6  1/7 = Answer: 1/42LCM = 42. So, 1/6  1/7 = 7/42  6/42 = 1/42.
36. 1/6  1/8 = Answer: 1/24LCM = 24. So, 1/6  1/8 = 4/24  3/24 = 1/24.
37. 1/6  1/9 = Answer: 1/18LCM = 18. So, 1/6  1/9 = 3/18  2/18 = 1/18.
38. 1/6  1/10 = Answer: 1/15LCM = 30. So, 1/6  1/10 = 5/30  3/30 = 2/30 = 1/15.
39. 1/6  1/11 = Answer: 5/66LCM = 66. So, 1/6  1/11 = 11/66  6/66 = 5/66.
40. 1/6  1/12 = Answer: 1/12LCM = 12. So, 1/6  1/12 = 2/12  1/12 = 1/12.
41. 1/7  1/8 = Answer: 1/56LCM = 56. So, 1/7  1/8 = 8/56  7/56 = 1/56.
42. 1/7  1/9 = Answer: 2/63LCM = 63. So, 1/7  1/9 = 9/63  7/63 = 2/63.
43. 1/7  1/10 = Answer: 3/70LCM = 70. So, 1/7  1/10 = 10/70  7/70 = 3/70.
44. 1/7  1/11 = Answer: 4/77LCM = 77. So, 1/7  1/11 = 11/77  7/77 = 4/77.
45. 1/7  1/12 = Answer: 5/84LCM = 84. So, 1/7  1/12 = 12/84  7/84 = 5/84.
46. 1/8  1/9 = Answer: 1/72LCM = 72. So, 1/8  1/9 = 9/72  8/72 = 1/72.
47. 1/8  1/10 = Answer: 1/40LCM = 40. So, 1/8  1/10 = 5/40  4/40 = 1/40.
48. 1/8  1/11 = Answer: 3/88LCM = 88. So, 1/8  1/11 = 11/88  8/88 = 3/88.
49. 1/8  1/12 = Answer: 1/24LCM = 24. So, 1/8  1/12 = 3/24  2/24 = 1/24.
50. 1/9  1/10 = Answer: 1/90LCM = 90. So, 1/9  1/10 = 10/90  9/90 = 1/90.
51. 1/9  1/11 = Answer: 2/99LCM = 99. So, 1/9  1/11 = 11/99  9/99 = 2/99.
Try the Quiz : Arithmetic Homework Help : Subtraction of Fractions I
