Question

Calcula x
x + 5y = 21
x - y = 2

Answer 1

RESOLUCIÓN :


$x + 5y = 21 x= 21-5y................(1) ------------------------------------ x - y = 2 usar (1) 21-5y -y=2 21-2= 6y 19/6=y ---------------------------------------------- x=21-5 (19/6) x= 21 -95 /6 x=31/6 RESPUESTA : \boxed{ y_{}= \frac{19}{6}; x_{}= \frac{31}{6} }}$