fractie echiunitara: numarator = numitor
fractie subunitara: numarator < numitor
fractie supraunitara: numarator > numitor
2.a) 3/3 (echiunitara) , 1/3(subunitara)
b). 4/4 (echi), 2/4 (sub)
c). 7/7(echi), 3/7(sub)
3. a). 3/3 (echi), 2/3(sub)
b). 4/4(echi), 2/4(sub)
c). 7/7(echi), 4/7(sub)
4). 3/8, 7/8, 1/6, 9/10, 6/10,10/100 - subunitare
4/4, 8/8,7/7, 100/100 - echiunitare
100/10 ,8/7, 10/9, 5/3, 7/4 - supraunitare
