Question

x supra y=0,6
Calculați valoarea raportului 2x-3y supra 5X+7y

Answer 1

[tex]\frac{x}{y}=0,6\Rightarrow \frac{x}{y}=\frac{6}{10}\Rightarrow \frac{x}{6}=\frac{y}{10}=k\Rightarrow x=6k,y=10k\\ \frac{2x-3y}{5x+7y}=\frac{12k-30k}{30k+70k}=\frac{-18k}{100k}=-\frac{9}{50}\\ Sper\ ca\ ai\ inteles.[/tex]

Answer 2

x/y=0,6⇒x/y=6/10⇒x=6;y=10
(2x-3y)/(5X+7y)=(2*6-3*10)/(5*6+7*10)=18/100=9/50
Sper ca team ajutat !!!
Succes!!!