Question

daca x supra y = 2 supra 3,atunci raportul 5x-y supra x+2y este egal cu:​A)7 supra 5,B) 7 supra 8,C) -1 supra 8,D) -1 supra 5.

Answer 1

x/y=2/3=>x=2y/3

(5x-y)/(x+2y)=(10y/3-y)/(2y/3+2y)=7y/3/8y/3=7y*3/8y*3=7/8