Замените деление умножением на обратную дробь и вычислите. 1) 3/5: 5/7= 2) 2/9: 1/3= 3) 10/11: 1/3= 4) 8/13: 5 = 5) 5: 1 целое 1/2 = 6) 1 целое 2/3 : 7=

1) 3/5: 5/7=3/5*7/5=21/25
2) 2/9: 1/3=2/9*3=6/9=2/3
3) 10/11: 1/3=10/11*3=30/11=2 8/11
4) 8/13: 5 =8/13*1/5=8/65
5) 5: 1 целое 1/2 =5: 3/2= 5*2/3=10/3= 3 1/3
6) 1 целое 2/3 : 7=5/3 : 7 = 5/3*1/7=5/21

3/5 : 5/7 = (3×7)/(5×5) = 21/25
2/9 : 1/3 = (2×3)/(9×1) = 6/9 = 2/3
10/11 : 1/3 = (10×3)/(11×1) = 30/11 = 2 целых 8/11
8/13 : 5 = 8/(13×5) = 8/65
5 : 1 целое1/2 = 5 : 3/2 = (5×2)/3 = 10/3 = 3 целых1/3
1 целое2/3 : 7 = 5/3 : 7 = 5/(3×7) = 5/21