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: