Calculati adunarile:
a) - 3 1/14+(-1 2/7 +5/6)
b(-1 2/3+5/8) +(-3 1/8+1 7/12)
c) - 2 3/4+1 1/6)+(-1 2/3+2 7/12)
D) (-3 2/5+1 1/4)+(-1 3/5+2 1/2)
Urgent! Dau coroana!