👤

EXPLICATI-MI, va rog, genul de probleme:
Stiind ca [tex] \frac{x}{y} = \frac{2}{3} [/tex], calculati [tex] \frac{6x+y}{x+3y} [/tex]

Dau coronita!


Răspuns :

x/y=2/3 =k 
x=2k si y=3k

inlocuind obtinem
(6*2k + 3k) : (2k+3*3k) = (12k+3k): (2k+9k) = 15k/11k=15/11