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

Răspuns :

Răspuns:

[tex]\frac{5x+3y}{2x+3y}[/tex] = [tex]\frac{58}{34}[/tex]

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

170x + 102y = 116x + 174y

54x = 72y

x = 72y : 54

[tex]\frac{x}{y}[/tex] = [tex]\frac{72y}{54}[/tex] : y = [tex]\frac{72y}{54y}[/tex] = [tex]\frac{72}{54}[/tex] = [tex]\frac{36}{27}[/tex] = [tex]\frac{4}{3}[/tex]