Question

Daca 5x+3y supra 2x+3y = 58 supra 34 aflati x supra y =? Va rog rapid dau coroana!

Answer 1

Răspuns:

$\frac{5x+3y}{2x+3y}$ = $\frac{58}{34}$

34 ( 5x + 3y ) = 58 ( 2x + 3y )

170x + 102y = 116x + 174y

54x = 72y

x = 72y : 54

$\frac{x}{y}$ = $\frac{72y}{54}$ : y = $\frac{72y}{54y}$ = $\frac{72}{54}$ = $\frac{36}{27}$ = $\frac{4}{3}$