a) 2/9 + 8/9 = 10/9 = 1 i 1/9
b) 3/7 + 1/7 = 4/7
c) 1/8 + 3/8 = 4/8 = 1/2
d) 6/11 + 5/11 = 11/11 = 1
e) 7/15 + 9/15 = 16/15 = 1 i 1/15
f) 11/12 + 7/12 = 18/12 = 1 i 6/12 = 1 i 1/2
g) 3 i 5/7 + 1 i 3/7 = 4 i 8/7 = 5 i 1/7
h) 1 i 5/9 + 2 i 4/9 = 3 i 9/9 = 4
i) 8 i 3/4 + 9 i 3/4 = 17 i 6/4 = 18 i 2/4 = 18 i 1/2
liczę na naj
