Zadanie 2
A) 4/8 = 1/2
B) 17/20
C) 23/25
D) 59/70
E) 18/30 = 9/15
F) 48/50 = 24/25
Zadnie 3
A)
3/8
8/11
2/4 + 2/4
11/50
B)
3/7
7/10
7/15
2.
a) 3/8 + 1/8 = 4/8 = 1/2
b) 9/20 + 8/20 = 17/20
c) 17/25 + 6/25 = 23/25
d) 38/70 + 21/70 = 59/70
e) 7/30 + 8/30 + 3/30 = 18/30 = 9/15
f) 21/50 + 19/50 + 8/50 = 48/50 = 24/25
3.
a) 3/8 + 5/8 = 1
3/11 + 8/11 = 1
1/4 + 3/4 = 1
39/50 + 11/50 = 1
b) 4/7 + 3/7 = 1
7/10 + 3/10 = 1
2/15 + 6/15 + 7/15 = 1
