Question

va rog,dau coroană!!!​

Answer 1

$\frac{3x+y}{x+2y}=\frac{4}{5}\\\\ 15x+5y=4x+8y\\\\ 15x-4x=8y-5y\\\\11x=3y\\ \\\frac{x}{y}=\frac{3}{11}$

Pas1:  inmultim mezii intre ei  si extremii intre ei(adica inmultim pe diagonala)

Pas2: trecem tot ce contine x in partea stanga si tot ce contine y in partea dreapta

Pas3: se obtine raportul dorit