Odpowiedź :
Odpowiedź:
9/15 + 4/15 = 13/15
7/11 + 2/11 = 9/11
4 i 3/8 + 2 i 4/8 = 6 i 7/8
3/9 + 7/9 = 10/9 = 1 i 1/9
3 i 2/3 + 2/3 = 3 i 4/3 = 4 i 1/3
4 i 3/5 + 2/5 = 4 i 5/5 = 5
4 i 6/7 + 2 i 1/7 = 6 i 7/7 = 7
3 i 5/10 + 4 i 9/10 = 7 i 14/10 = 8 i 4/10 = 8 i 2/5
2 i 4/6 + 7 i 5/6 = 9 i 9/6 = 10 i 3/6 = 10 i 1/2
Szczegółowe wyjaśnienie:
a) = 13/15
b) = 9/11
c)= 6 7/8
d)= 10/9 = 1 1/9
e)= 3 4/3 = 4 1/3
f)= 4 5/5 = 5
g)= 6 7/7 = 7
h)= 7 14/10 = 8 4/10 = 8 2/5
i)= 9 10/6= 10 4/6 = 10 2/3.