Автор - amirasamina
Ответ:
Пошаговое объяснение:
357.
1) 7целых 1/7 × 3целых 1/2 = 50/7 × 7/2 = 25/1 × 1/1 = 25
2) 10целых 1/22 × 1целая 1/3 = 221/22 × 4/3 = 221/11 × 2/3 = 442/33 = 13целых13/33
3) 1целая 7/10 × 3целых 1/3 = 17/10 × 10/3 = 17/1 × 1/3 = 17/3 = 5целых 2/3
4) 8целых 2/3 × 1целая 2/13 = 26/3 × 15/13 = 2/1 × 5/1 = 10/1 = 10
358.
1) 3целых 12/13 × 13/17 = 51/13 × 13/17 = 3/1 × 1/1 = 3/1 = 3
2) 11/28 × 6целых 4/11 = 11/28 × 70/11 = 1/14 × 35/1 = 35/14 = 2целых 7/14 = 2целых 1/2
3) 4целых 2/15 × 5/31 = 62/15 × 5/31 = 2/3 × 1/1 = 2/3
4) 19/20 × 3целых 3/19 = 19/20 × 60/19 = 1/1 × 3/1 = 3/1 = 3
359.
1) 9целых 1/9 ×9 = 82/9 × 9 = 82/1 = 82
2) 5 × 7целых 1/15 = 5 × 106/15 = 106/3 = 35целых 1/3
3) 1целая 1/18 × 6 = 19/18 × 6 = 19/3 = 6целых 1/3
4) 24/25 × 1целая 1/4 = 24/25 × 5/4 = 6/5 × 1/1 = 6/5 = 1целая 1/5