Bună! Răspunsul este mai jos.
[tex] \frac{x}{y} = \frac{4}{5} = > [/tex]
[tex]a) \: \frac{x + y}{y} = \frac{4 + 5}{5} = \frac{9}{5} = 1.8[/tex]
[tex]b) \: \frac{x}{y + x} = \frac{4}{5 + 4} = \frac{4}{9} = 0.(4)[/tex]
[tex]c) \: \frac{y - x}{x} = \frac{5 - 4}{4} = \frac{1}{4} = 0.25[/tex]
