7 / 7 - 3 / 12

= 63/84

3/ 2 - 1 / 12

= 34/24

1…3/7 - 4 / 5

= 22/35

2,7 - 5 /8

= 118/80

3…4/6 -1,04

= 1576/600

9 / 10 - 4 / 7

= 23/70

5 / 8 - 3 / 8

= 25/64

3…1/5 - 2 / 9

= 134/45

5 / 6 - 0,06

= 464/600

3…5 / 7 - 0,02

= 2586/700

5 / 6 - 9 / 45

= 171/270

2 / 4 - 3 / 6

= 0

1…7 / 8 - 5 / 6

= 50/48

4,008 - 6 / 9

= 35472/9000

6,0403 - 1,4

= 464030/100000

12 /13 - 1/ 2

= 11/26

7 / 14 - 2 / 5

= 7/70

12…1/3 - 6 / 7

= 241/21

2 / 7 - 0,0005

= 19965/70000

4,09 - 0,03

= 406/100