50.
a) 2 35/17
2x17 35
34 < 35
=> 2 < 35/17
b) 63/8 8
63 8x8
63 < 64
=> 63/8 < 8
c) 5 25/5
5x5 25
25 = 25
=> 5 = 25/5
51. 5/6 7/9
5x9/6x9 7x6/9x6
45/54 42/54
45 > 42
=> 5/6 > 7/9
52.
a) 2/3 5/6
2x2 5
4 < 5
=> 2/3 < 5/6
b) 7/8 3/4
7 3x2
7 > 6
=> 7/8 > 3/4
c) 6/11 36/66
6x6 36
36 = 36
=> 6/11 = 36/66
