Odpowiedź:
a)
7/15 * 1 5/7 * 25/28 = 1/3 * 5/4 * 12/7 = 5 * 3/7 = 15/7 = 2 1/7
b)
3 6/7 * (-1/3) = 27/7 * (-1/3) = -9/7 = -1 2/7
c)
(-2 2/9) * (-1,17) = 20/9 * 117/100 = 13/5 = 2 3/5
d)
(2 4/5)² = (14/5)² = 196/25 = 7 21.25
Szczegółowe wyjaśnienie:
