443. (1) 6:1/4 (2) 5:5/6 (3)10:5/9 445. (1) 3 1/2 :2 1/3 (2) 2 5/8 : 1 3/4
446. (1) 5/6 : 1 2/3 (2) 3 1/7 : 4/7

:

Пошаговое объяснение:

443.

(1) 6:1/4 = 6 * 4/1 = 24

(2) 5:5/6 = 5 * 6/5 = 6

(3)10:5/9 = 10 * 9/5 = 18

445.

(1) 3 1/2 :2 1/3 = 7/2 : 7/3 = 7/2 * 3/7 = 3/2 = 1 1/2

(2) 2 5/8 : 1 3/4 = 21/8 : 7/4 = 21/8 * 4/7 = 3/2 = 1 1/2

446.

(1) 5/6 : 1 2/3 = 5/6 : 5/3 = 5/6 * 3/5 = 1/2

(2) 3 1/7 : 4/7 = 22/7 * 7/4 = 11/2 = 5 1/2