Question

Calculați valoarea raportului 2x+3y/5x-y, știind că x/y=0,5. URGENT! VĂ ROG!!

Answer 1

Rezolvarea in atașament

Answer 2

$\frac{2x+3y}{5x-y}$
Dam factor comun y: 
$\frac{y(2\frac{x}{y}+3)}{y(5\frac{x}{y}-1)}$
Simplificam prin y: 
$\frac{2\frac{x}{y}+3}{5\frac{x}{y}-1}=\frac{2\cdot 0.5+3}{5\cdot 0.5-1}=\frac{1+3}{2.5-1}=\frac{4}{1.5}=4: \frac{15}{10}=4\cdot \frac{10}{15}=4\cdot \frac{2}{3}=\frac{8}{3}=2,(6)$