3/4-5/16=...... 3/10-1/5=....... 2/3-5/9=........ 1/2-1/4=......... 3/7-5/14=........ 2/5-1/20=....
3/4-5/16=0,4375
3/10-1/5=0,1
2/3-5/9=0,(1)
1/2-1/4=0,25
3/7-5/14=0,07142857142
2/5-1/20=0,35
1. =7/16
2. =1/10
3. =1/9
4. =1/4
5. =1/14
6. = 5/20 = 1/4