5.
echiunitare : 7/7,8/8;
subunitare: 3/8,4/9,9/100,3/6,10/100;
supraunitare : 9/4,20/10,7/3,100/10,9/6;
7.
a) 3/9,5/9,2/9;
b) 8/7,389/7,90000/7;
c) 5/5,7777/7777,9876/9876
SPER CA TE AM AJUTAT!!!♡♡