Respuesta :
[tex]\dfrac 13 \times \dfrac 58 = \dfrac 5{3\times 8} = \dfrac 5{24}[/tex]
First change to the same denominator: 1/3x8 and 5/8x3; 8/24 and 15/24. Finally only multiply the numerators: 120/24; then convert the top heavy fraction. The final answer is 5.