12. Oblicz:

a)

7/8 / 3 =

5 / (2 1/4) =

7 1/4 / 9 =

b)

2/5 / (3/4) =

4 3/8 / (2/3) =

1 1/3 / (1 4/5) =​



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Odpowiedź :

Odpowiedź:

a)

7/8 / 3 = 7/8 * 1/3 == 7/24

5 / (2 1/4) = 5 : 9/4 = 5 * 4/9 = 20/9 = 2 2/9

7 1/4 / 9 = 29/4 * 1/9 = 29/36

b)

2/5 / (3/4) = 2/5 * 4/3 = 8/15

4 3/8 / (2/3) = 35/8 * 3/2 = 105/16 = 6 9/16

1 1/3 / (1 4/5) =​ 4/3 : 9/5 = 4/3 * 5/9 = 20/2

Szczegółowe wyjaśnienie: