Răspuns:
Explicație pas cu pas:
a). 5/3; 7/3; 7/5; 9/3; 9/5; 9/7; 10/3; 10/5; 10/7
b). 6/7; 6/8; 6/9
a)10/3;10/5;10/7;10/9 ;9/3;9/5;9/7/;7/3; 7/5;;5/3 ; b) 6/7 ; 6/8 ; 6/9
