(3) resolva:a) 5/10 : 1/3 b)7/8 : 3 c) 2/9 : 2/3me ajudem por...

resposta:

a) 15/10 (3/2)

b)7/24

c) 6/18 (1/3)

Explicação:

a) 5/10÷1/3 =

5/10×3/1 =

5×3/10×1 =

15/10 = 15÷5/10÷5 = 3/2

b)7/8÷3 =

7/8÷3/1 =

7/8×1/3 =

7×1/8×3 =

7/24

c) 2/9÷2/3 =

2/9×3/2 =

2×3/9×2 =

6/18 = 6÷2/18÷2 = 3/9 = 3÷3/9÷3 = 1/3