Răspuns:
Explicație pas cu pas:
[tex] \frac{x}{y} = \frac{5}{13} \\ [/tex]
a)
[tex] \frac{x + y}{y} = \frac{5 + 13}{13} = \frac{18}{13} \\ [/tex]
b)
[tex] \frac{x}{y + x} = \frac{5}{13 + 5} = \frac{5}{18} \\ [/tex]
c)
[tex] \frac{y - x}{x} = \frac{13 - 5}{5} = \frac{8}{5} \\ [/tex]
