Question

daca x/y = 2/5 4x-y supra 2x+y

Answer 1

$\frac{x}{y}=\frac{2}{5} \\ \frac{4x-y}{2x+y}=\frac{4\cdot 2-5}{2 \cdot 2+5}=\frac{8-5}{4+5}=\frac{3}{9}=\boxed{\frac{1}{3}}$

Answer 2

Răspuns:

Deci uite cum putem face:

x/y=2/5

4/x-y/2x+y=4*2-5/2*2+5=8-5/4+5=3/9(simplificăm prin 3)=>1/3(răspunsul final)

Nu e asa dificil până la urmă, nu?

Succes , elev bun!