a) 2/3 ( * 2 = 4/6
b) 2/3 ( * 3 = 6/9
c) 2/3 ( * 4 = 8 / 12
d) 2/3 ( * 7 = 14/21
( * - amplificare
a)2=4/6
b) 3=6/9
c)4=8/12
d)7=14/21
*sper că te-am ajutat