(7-1 целых 5/9: 7/24)*1целая 7/20 !

1) 1 5/9 : 7/24 = 14/9 : 7/24 = 14/9 * 24/7 = 5 (целых) 1/3 2) 7 - 5целых 1/3 = 7/1 - 5 1/3 = 21/3 - 16/3 = 5/3 = 1 2/3 3) 1 2/3 *1 7/20 = 5/3* 27/20 = 9/4 = 2 1/4надеюсь,правильно