3/3-3/4=(4x3-3x3)/12=(12-9)/12=3/12=1/4
Am adus la acelasi numitor, adica 12 se imparte și la 3 si la 4,
3 supra 12 am împărțit la 3 si a rămas 1 supra 4
3/3-5/7=(7x3-3x5)/21=(21-15)/21=6/21 imparte la 3=2/7
3/3-8/9=(3x3-1x8)/9=(9-8)/9=1/9
12/10 imparte la 2=6/5
Si atunci
3/3-6/5=(3x5-3x6)/15=(15-18)/15= - 3/15 imparte la 3= - 1/5
45/100 imparte la 5 si ramane =9/20
3/3-9/20=(20x3-3x9)/60=(60-27)/60=33/60 imparte la 3 si ai =11/20
3/3-1/2=(3x2-3x1)/6=(6-3)/6=3/6 imparte la 3= 1/2
3/3-5/6=(3x2-5x1)/6=(6-5)/6=1/6
3/3-2/5=(5x3-3x2)/15=(15-6)/15=9/15 imparte la 3 =3/5
Sper ca e bine
