Question

14)Daca $\frac{x}{y} = \frac{1}{5}$ si $\frac{z}{y} = \frac{2}{3}$ ,aflati $\frac{z+y}{x}$ .
P.S       Raspunsul este 25supra 3 ....Eu vreau rezolvarea desfasurata cu acest rezultat la sfarsit

Answer 1

[tex]\frac{x}{y}=\frac{1}{5}\\ \frac{x}{1}=\frac{y}{5}=k;x=k,y=5k\\ \frac{z}{y}=\frac{2}{3}\\ \frac{z}{5k}=\frac{2}{3},z=\frac{10k}{3}\\ \frac{z+y}{x}=\frac{ \frac{10k}{3}+5k}{k}=\frac{25k}{3}*\frac{1}{k}=\frac{25}{3} [/tex]