Respuesta :

Mareska95

x + 2y = 5 /* (-1)

3x + 2y = 9

__________

-x - 2y = -5

3x + 2y = 9

add these two equations

_______________

2x = 4

x = 4/2 = 2$ for a hotdog

2y = 5 - x = 5 - 2 = 3 => y = 3/2 = 1.5$ for a hamburger