Răspuns :

1 - 4/7 = 7/7 - 4/7 = 3/7

1 - 7/8 = 8/8 - 7/8 = 1/8

1 - 2/9 = 9/9 - 2/9 = 7/9

1 - 3/4 = 4/4 - 3/4 = 1/4

3 - 1/2 = 6/2 - 1/2 = 5/2 = 2  1/2

2 - 3/4 = 8/4 - 3/4 = 5/4 = 1  1/4

1 - 4/15 = 15/15 - 4/15 = 11/15

1 - 3/7 = 7/7 - 3/7 = 4/7

Răspuns:

⁷⁾1-4/7=7/7-4/7=3/7

⁸⁾1-7/8=8/8-7/8=1/8

⁹⁾1-2/9= 9/9-2/9=7/9

⁴⁾1-3/4 = 4/4-3/4=1/4

²⁾3-1/2=6/2-1/2=5/2

⁴⁾2-3/4=8/4-3/4=5/4

¹⁵⁾1-4/15=15/15-4/15=11/15

⁷⁾1-3/7=7/7-3/7=4/7