Question

3. Ştiind că x/y=4/7 aflaţi valoarea raportului 9x-5y/2x-y​

Answer 1

Răspuns:

x=y×4/7, y≠0

9x-5xy/2-y

buna

sper ca team ajutatt

Answer 2

$\it \dfrac{x}{y}=\dfrac{4}{7} \Rightarrow y=\dfrac{7x}{4} \Rightarrow y=1,75x\ \ \ \ \ (*)\\ \\ \\ \dfrac{9x-5y}{2x-y}=\dfrac{9x-5\cdot1,75x}{2x-1,75x}=\dfrac{x(9-8,75)}{x(2-1,75)}=\dfrac{0,25}{0,25}=1$