Quantcast

A community for students. Sign up today!

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

smartgirl101

  • 2 years ago

Solve the system of equations using the elimination method and give your answer as an ordered pair: -5x - 3y = -16 -x + 9y = 64

  • This Question is Closed
  1. creative_huh
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    The elimination method puts two equations on top of each other and "adds" or "subtracts" one equation from another to eliminate a variable. Say we want to get rid of y. You would manipulate the equations so that the y-values in each would be opposite integers. So here, we can manipulate -3y to -9y so the y's will be cancelled with the 9y in the second equation.

  2. creative_huh
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    -5x-3y=-16 ---times three---> -15x-9y=-48 second equation --------------> -x+9y= 64 adding both equations ---------> -16x+0y= 16 so, -16x=16 and x=-1

  3. creative_huh
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    Now you can solve for y by substituting -1 into x, and you'll have your ordered pair

  4. Not the answer you are looking for?
    Search for more explanations.

    • Attachments:

Ask your own question

Ask a Question
Find more explanations on OpenStudy

Your question is ready. Sign up for free to start getting answers.

spraguer (Moderator)
5 → View Detailed Profile

is replying to Can someone tell me what button the professor is hitting...

23

  • Teamwork 19 Teammate
  • Problem Solving 19 Hero
  • You have blocked this person.
  • ✔ You're a fan Checking fan status...

Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.

This is the testimonial you wrote.
You haven't written a testimonial for Owlfred.