Respuesta :

2x + 4y = 36
3x - 4y = -6
--------------add
5x = 30 
  x = 6

2x+4y=36 
2(6)+4y=36 
12 + 4y = 36
4y = 24
  y = 6

answer
(6, 6) is a solution of equations
(4,7) is NOT a solution of equations

using (4,7)

2(4) +4(7) = 8 +28 =36 True

3(4) - 4(7) = 12 -28 =-16 False (-16 is not -6)

 (4,7) is not a solution