Respuesta :

[tex]\begin{gathered} 6(x-y) \\ 6(5-(-2)) \\ 6(7) \\ 42 \end{gathered}[/tex]

4.

[tex]\begin{gathered} \frac{4x+z}{y} \\ \frac{4(5)+6}{-2}=\frac{20+6}{-2}=\frac{26}{-2}=-13 \\ \\ \end{gathered}[/tex]