Respuesta :

namboozejovia2

Answer:

(3x-9x)+12y-6y=21-15

-6x+6y=6.

I think that is the answer

mhanifa

Answer:

  • (3, 4)

Step-by-step explanation:

Solve the system by elimination.

Divide the second equation by 3 and add to fist equation:

  • 3x - 6y - 9x/3 + 12y/3 = -15 + 21/3
  • 3x - 3x - 6y + 4y = -15 + 7
  • -2y = - 8
  • y = -8/-2
  • y = 4

Find the value of x:

  • 3x - 6*4 = - 15
  • 3x - 24 = - 15
  • 3x = 24 - 15
  • 3x = 9
  • x = 3