а)1) 11/15 * 25/33 = 275/495 = 55/9955/99 + 1 целая 3/45 = 55/99 + 3/3 + 3/45 = 55/99 + 3 + 3/45 = 58 целых 8/99
2) 2 целая 1/16 - 2/3 * 7/12 = 33/16 - 14/36 = 33/16 - 7/18 = (891 - 112)/288 = 779/288 = 2 целых 215/288
б)1) 1/2 1 целая 2/3 = 1/2 5/3 = 5/65/6 : 10 = 5/6 ÷ 10 = 5/60 = 1/12
2) (1 целая - 1/2) : (1/2 - 1/3) = 1/1 - 1/2 = 2/2 - 1/2 = 1/2(1/2 - 1/3) = 3/6 - 2/6 = 1/61/2 ÷ 1/6 = 1/2 * 6/1 = 6/2 = 3
а)
1) 11/15 * 25/33 = 275/495 = 55/99
55/99 + 1 целая 3/45 = 55/99 + 3/3 + 3/45 = 55/99 + 3 + 3/45 = 58 целых 8/99
2) 2 целая 1/16 - 2/3 * 7/12 = 33/16 - 14/36 = 33/16 - 7/18 = (891 - 112)/288 = 779/288 = 2 целых 215/288
б)
1) 1/2 1 целая 2/3 = 1/2 5/3 = 5/6
5/6 : 10 = 5/6 ÷ 10 = 5/60 = 1/12
2) (1 целая - 1/2) : (1/2 - 1/3) = 1/1 - 1/2 = 2/2 - 1/2 = 1/2
(1/2 - 1/3) = 3/6 - 2/6 = 1/6
1/2 ÷ 1/6 = 1/2 * 6/1 = 6/2 = 3