Question

Stii cand ca 4x -2y supra 2x-y = 1 supra 4, determinati valoarea raportului

Answer 1

4x-2y/2x-y=1/4⇒4(4x-2y)=2x-y⇒16x-8y=2x-y⇒16x-2x=8y-y⇒14x=7y⇒14x-7y=0
sucees

Answer 2

facem produsul mezilor egal cu produsul extremilor => 16x-8y=2x-y=> 16x-2x=8y-y => 14x=7y => x/y=7/14 => x/y=1/2