Răspuns :
3. a) a/b = 6//2/9 = 6×9/2 = 54/2 = 27
CU // AM NOTAT LINIA DE FRACTIE
b) a = 11/5 si b = 22/5
a/b = 11/5//22/5 = 11×5/5×22 = 55/110 = 0,5
c) a = 15/90 si b = 2/6
a/b = 15/90//2/6 = 15×6/90×2 = 90/180 = 0,5
4. a) x/3 = 5
x = 3×5
x = 15
b) 18/x = 6
x = 18:6
x = 3