Răspuns:
Explicație pas cu pas:
a) 3/4 : 2/5 = 3/4 × 5/2 = (3 × 5)/(4 × 2) = 15/8
b) (- 1/2) : 3/7 = - 1/2 × 7/3 = - (1 × 7)/(2 × 3) = - 7/6
c) 2/3 : (- 3/5) = - 2/3 × 5/3 = - (2 × 5)/(3 × 3)= - 10/9
