calculați: a) (-3/7)+(+5/6)+(-8/21)+(+9/14) b) (+8/15)+(9/10)+(+5/6)+(-4/5) c) (-2/3)+(11/12)+(-7/8)+(+1/6) d) (+4/9)+(-5/6)+(+3/4)+(-7/18) e) (-8/12)+(-5/7)+(+17/42)+(+9/14) f) (-7/24)+(+5/18)+(+11/12)+(-4/9)
Va rog am nevoie de ajutor
Dau coroana
Va rog, urgent!!!
Am nevoie de ajutor
DAU COROANĂ