Respuesta :

[tex]\begin{gathered} 20\text{ 32 }|\text{ 2} \\ 10\text{ 16 | 2} \\ 5\text{--8 } \\ \text{GCF = 2}\cdot2=4 \\ GCF=\text{ 4} \\ \text{GCF of 20 and 32 is 4} \end{gathered}[/tex]