3. Oblicz.
3 - (2/5) = 7 - (4 (2/25)) = (5 (3/6)) -2 =
8 - (23/25) = ​ 25 - (17 (3/5)) = (107 (13/20)) -13 =


Odpowiedź :

Odpowiedź:

3. Oblicz.

3 - (2/5) = 2 3/5

7 - (4 (2/25)) = 7 - 8/25 = 6 17/25

(5 (3/6)) -2 = 15/6 - 2 = 2 3/6 - 2 = 2 1/2 - 2 = 1/2

8 - (23/25) = ​7 2/25

25 - (17 (3/5)) =  25 - 51/5 = 25 - 10 1/5 = 4 4/5

(107 (13/20)) -13 = 1391/20 - 13 = 69,55 - 13 = 56,55

Szczegółowe wyjaśnienie: