Пошаговое объяснение:

5/10 = (5:5)/(10:5) = 1/2

8/32 = (8:8)/(32:8) = 1/4

14/63 = (14:7)/(63:7) = 2/9

25/40 = (25:5)/(40:5) = 5/8

32/80 = (32:16)/(80:16) = 2/5

56/72 = (56:8)/(72:8) = 7/9

72/108 = (72:36)/(108:36) = 2/3

480/640 = (480:160)/(640:160) = 3/4

Пошаговое объяснение:

5/10 = 5/2*5 = 1/2

8/32 = 8/4*8 = 1/4

14/63 = 2*7/9*7 = 2/9

25/40 = 5*5/8*5= 5/8

32/80 = 2*16/5*16 = 2/5

56/72 = 7*8/9*8 = 7/9

72/108 = 2*36/3*36 = 2/3

480/640 = 3*160/4*160 = 3/4