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Hey! I really need help figuring this problem out. I have a test in a few hours and I don't know how to find the answer to questions like these, I would really appreciate it if you show your work so I can figure out how to solve these myself. Thank you!

BRAINLIEST50 POINTS Hey I really need help figuring this problem out I have a test in a few hours and I dont know how to find the answer to questions like these class=

Respuesta :

mhanifa

Answer:

  • (2, -1)

Step-by-step explanation:

Given system:

  • -3x - 2y = -4
  • 9x + 3y = 15

Solving by elimination

Multiply the first equation by 3 and add up equations, then solve for y:

  • 3(-3x) - 3(2y) + 9x + 3y = 3(-4) + 15
  • -9x - 6y + 9x + 3y = -12 + 15
  • -3y = 3
  • y = 3/(-3)
  • y = -1

Find the value of x:

  • -3x - 2(-1) = -4
  • -3x + 2 = -4
  • -3x = - 4 - 2
  • -3x = -6
  • x = -6/(-3)
  • x = 2

The answer is: (2, -1)

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