Question

efectuatii 1 supra 2 - 1 supra 7 ; 2 supra 3 -1 supra 4 ; 5 supra 4 - 1 supra 2 ; 5 supra 6 - 1 supra 3

Answer 1

1/2-1/7=7/14-2/14=5/14 am amplificat schimbînd ordinea numitorilor
2/3-1/4=8/12-3/12=5/12
5/4-1/2=5/4-2/4=3/4
5/6-1/3=5/6-2/6=3/6=1/2