a) 11/6+4/9, numitor comun 18, (33+8)/18=41/18
b) 1/10+(-2/25), numitor comun 50, (5-4)/50=1/50
c) -7/3+1/27, numitor comun 27, (-63+1)/27=-62/27
d) -5/12+(-1/16), numitor comun 48, (-20-3)/48=-23/48
e) 2+1/8=(16+1)/8=17/8
f) 3+(-2/5)=(15-2)/5=13/5
g) -1+1/2=(-2+1)2=-1/2
h) -4+(-2/3)=(-12-2)/3=-14/3
