Respuesta :

bayosanuade

Answer: x = 3

y = 30

Step-by-step explanation:

substitute y = 10x into the first equation , we have

- x +2(10x) = 57

-x + 20x = 57

19x = 57

x = 57/19

x = 3

Substitute x = 3  into the second equation

10(3) = y

Therefore y =30