2/16 se simplifica cu2=1/8 . 8/10 simp.2 =4/5 . 10/28simp.2=5/14 14/24 simp2=7/12 .15/6 simp. 3=5/2 .27/45 simp3=9/15 .102/162 simp3=34/54 180/273 simp 3=60/91 .25/80 simp5=5/16.15/45 simp5 =3/9 simp3=1/3. 35/50 simp5=7/10.200/95 simp5=40/19. 250/30 simp5=50/6 40/70simp5=8/14simp2=4/7 . 300/170simp5=60/34 1300/260 simp5=260/52