Question

ПОМОГИТЕ ПОЖАЛУЙСТА!!!

Answer 1

1) 17,25 * 2 2/3 = 17 25/100 * 2 2/3 = 17 1/4 * 8/3 = 69/4 * 8/3 = 23/1 * 2/1 = 46
2) 15 * 4 2/5 = 15/1 * 22/5 = 3 * 22 = 66 лет деду
3) 56 : 3 7/11 = 56 : 40/11 = 56/1 * 11/40 = 7/1 * 11/5 = 77/5 = 15,4 км/ч
4) 9/20 : 1/5 = 9/20 * 5/1 = 9/4 = 2,25 раза 
5) 3/4 * 3 3/5 = 3/4 * 18/5 = 3/2 * 9/5 = 27/10 = 2,7 км