Question

Calculați: 3/11+1/10,1/13+1/10,3/4+1/8+1/16,1/3+1/9+1/27,7/12+17/60,13/24+35/72,3/5+5/9,1/2+1/9. Folosiți amplificarea și simplificarea. Vă rog dau coroana

Answer 1

3/11+1/10=30/110+11/110=41/110      (n.c.=110)  
1/13+1/10=  10/130+13/130=23/130   
3/4+1/8+1/16=12/16+2/16+1/16=15/16
1/3+1/9+1/27=9/27+3/27+1/27=13/27
7/12+17/60=35/60+17/60=52/60=13/15
13/24+35/72=39/72+35/72=74/72=37/36
3/5+5/9=27/45+25/45=52/45
1/2+1/9=9/18+2/18=11/18