Respuesta :

sqdancefan

9514 1404 393

Answer:

  (4)  x = 15

Step-by-step explanation:

Twice the second equation can be added to the first.

  (x +2y) +2(x -y) = (37) +2(4)

  3x = 45 . . . . . . . simplify

  x = 15 . . . . . . . . . divide by 3