Odpowiedź:
zadanie 9
a)
5 i 5/8 + 3 i 7/8 = 8 i 12/8 = 9 i 4/8 = 9 i 1/2
b)
3 i 15/17 + 1 i 9/17 = 4 i 24/17 = 5 i 7/17
c)
4 i 4/11 + 3 i 9/11 = 7 i 13/11= 8 i 2/11
d)
6 i 11/10 + 3 i 7/10 = 7 i 1/10 + 3 i 7/10 = 10 i 8/10 = 10 i 4/5
zadanie 10
7 i 7/10 + 2 i 9/10 = 9 i 16/10 = 10 i 6/10 = 10 i 3/5
Odp. Szukana liczba to 10 i 3/5.
zadanie 11.
a)
4 - 2/7 = 3 i 7/7 - 2/7 = 3 i 5/7
b)
6 - 1 i 1/4 = 5 i 4/4 - 1 i 1/4 = 4 i 3/4
c)
4 i 1/3 - 1 i 2/3 =3 i 4/3 - 1 i 2/3 = 2 i 2/3
d)
5 i 2/9 - 3 i 4/9 = 4 i 11/9 - 3 i 4/9 = 1i 7/9
Szczegółowe wyjaśnienie:
