Question

Daca 10x-14y+8/5x+3y-4=-2 ,sa se afle x/y.

Answer 1

Răspuns:

Explicație pas cu pas:

(10x - 14y + 8)/(5x + 3y - 4) = - 2

10x - 14y + 8 = - 2(5x + 3y - 4)

10x - 14y + 8 = - 10x - 6y + 8

10x - 14y = - 10x - 6y

10x + 10x = - 6y + 14y

20x = 8y

x/y = 8/20 = 2/5

Answer 2

$\it \dfrac{10x-14y+8}{5x+3y-4}=-2 \Rightarrow 10x-14y+\not8=-10x-6y+\not8 \Rightarrow \\ \\ \\ \Rightarrow 10x+10x=14y-6y \Rightarrow 20x=8y\Big|_{:4} \Rightarrow 5x=2y \Rightarrow \dfrac{x}{y}=\dfrac{2}{5}$