А)1) 11/15 25/33 = 275/495 = 55/991 целая 3/45 = 1 + 3/45 = 1 + (3/15) = 1 + 1/5 = 6/5Итак, 55/99 + 6/5 = (555 + 996)/(995) = (275 + 594)/495 = 869/495 = 115/66
2) 2 целая 1/16 = 2 + 1/16 = 2 + (1/8) = 17/82/3 7/12 = 14/36 = 7/18Итак, 17/8 - 7/18 = (1718 - 78)/(818) = (306 - 56)/144 = 250/144 = 125/72
Б)1) 1/2 1 целая 2/3 = 1/2 5/3 = 5/61 целая 2/3 : 10 целую = 5/3 : 10 = 1/6
2) (1 целая - 1/2) : (1/2 - 1/3) = (3/2) : (1/6) = 3/2 * 6 = 9/2 = 4 целая 1/2
А)
1) 11/15 25/33 = 275/495 = 55/99
1 целая 3/45 = 1 + 3/45 = 1 + (3/15) = 1 + 1/5 = 6/5
Итак, 55/99 + 6/5 = (555 + 996)/(995) = (275 + 594)/495 = 869/495 = 115/66
2) 2 целая 1/16 = 2 + 1/16 = 2 + (1/8) = 17/8
2/3 7/12 = 14/36 = 7/18
Итак, 17/8 - 7/18 = (1718 - 78)/(818) = (306 - 56)/144 = 250/144 = 125/72
Б)
1) 1/2 1 целая 2/3 = 1/2 5/3 = 5/6
1 целая 2/3 : 10 целую = 5/3 : 10 = 1/6
2) (1 целая - 1/2) : (1/2 - 1/3) = (3/2) : (1/6) = 3/2 * 6 = 9/2 = 4 целая 1/2