Respuesta :
x- 3y = -2
x + 3y = 16
----------------add
2x = 14
x = 14/2
x = 7
x + 3y = 16
7 + 3y = 16
3y = 16 - 7
3y = 9
y = 9/3
y = 3
solution is : (7,3)
x + 3y = 16
----------------add
2x = 14
x = 14/2
x = 7
x + 3y = 16
7 + 3y = 16
3y = 16 - 7
3y = 9
y = 9/3
y = 3
solution is : (7,3)