Пошаговое объяснение:
1/2 - 2/5 = 5/10 - 4/10 = 1/10
1/4 - 1/5 = 5/20 - 4/20 = 1/20
3/5 - 2/7 = 21/35 - 10/35 = 11/35
8/9 - 7/15 = 40/45 - 21/45 = 19/45
7/11 - 4/7 = 49/77 - 44/77 = 5/77
19/20 - 13/15 = 57/60 - 52/60 = 5/60 = 1/12
11/18 - 11/30 = 55/90 - 33/90 = 22/90 = 11/45
17/24 - 19/60 = 85/120 - 38/120 = 47/120
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Пошаговое объяснение:
1/2 - 2/5 = 5/10 - 4/10 = 1/10
1/4 - 1/5 = 5/20 - 4/20 = 1/20
3/5 - 2/7 = 21/35 - 10/35 = 11/35
8/9 - 7/15 = 40/45 - 21/45 = 19/45
7/11 - 4/7 = 49/77 - 44/77 = 5/77
19/20 - 13/15 = 57/60 - 52/60 = 5/60 = 1/12
11/18 - 11/30 = 55/90 - 33/90 = 22/90 = 11/45
17/24 - 19/60 = 85/120 - 38/120 = 47/120