Odpowiedź:
a= 5/10
b= 2/8 + 5/8 =6/8
c= 3/9 + 4/9= 7/9
d=1 2/12 + 3 5/12 = 4 7/12
e= 6/10 - 3/10 =3/10
f=21/9 - 7/9 = 14/10 = 1 4/10
g 3 2/4 - 1/4 = 3 1/4
h 5 2/6 - 1 1/6= 4 1/6
