Odpowiedź:
a)
(3/4 - 1/2) * 3 1/5 = (3/4 - 2/4) * 16/5 = 1/4 * 16/5 = 4/5
b)
7/8 * 4/5 - 2/3 * 6/14 = 7/10 - 2/7 = 49/70 - 20/70 = 29/70
c)
2 1/3 * (1 3/4 - 7/8) = 7/3 * (1 6/8 - 7/8) = 7/3 * (14/8 - 7/8) = 7/3 * 7/8 = 49/24 =
= 2 1/24
d)
3 1/5 * 1/2 - 5/7 * 1 2/5 = 16/5 * 1/2 - 5/7 * 7/5 = 8/5 - 1 = 3/5
e)
1/5 * (3 3/7 - 2/7 * 5 1/2) = 1/5 * (3 3/7 - 2/7 * 11/2) = 1/5 * (3 3/7 - 11/7) =
= 1/5 * (2 10/7 - 1 4/7) = 1/5 * 1 6/7 = 1/5 * 13/7 = 13/35
Szczegółowe wyjaśnienie:
