Odpowiedź :
Odpowiedź:
1.
a)
2 1/6 - 1 3/4 = 2 2/12 - 1 9/12 = 1 14/12 - 1 9/12 = 5/12 III
b)
1 1/3 * 2 3/4 = 4/3 * 11/4 = 44/12 = 3 8/12 = 3 2/3 I
c)
1 4/5 : 1 2/7 = 9/5 : 9/7 = 9/5 * 7/9 = 7/5 = 1 2/5 V
d)
1 7/8 + 2 1/4 = 1 7/8 + 2 2/8 = 3 9/8 = 4 1/8 II
2.
9 1/2 - 1 3/8 * 6 = 9 1/2 - 11/8 * 6 = 9 1/2 - 33/4 = 9 1/2 - 8 1/4 = 9 2/4 - 8 1/4 = 1 1/4
odp. D.
Szczegółowe wyjaśnienie:
Odpowiedź:
zad 1
2 i 1/6 - 1 i 3/4 = 2 i 2/12 - 1 i 9/12 = 1 i 14/12 - 1 i 9/12 = 5/12 -------III
1 i 1/3 * 2 i 3/4 = 4/3 * 11/4 = 11/3 = 3 i 2/3 ----------I
1 i 4/5 : 1 i 2/7 = 9/5 * 7/9 = 7/5 = 1 i 2/5 ----------V
1 i 7/8 + 2 i 1/4 = 1 i 7/8 + 2 i 2/8 = 3 i 9/8 = 4 i 1/8 --------II
zad 2
9 i 1/2 - 1 i 3/8 * 6 = 9 i 1/2 - 11/8 * 6 = 33/4 = 9 i 1/2 - 8 i 1/4 = 9 i 2/4 - 8 i 1/4 = 1 i 1/4
ODP D