A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

lovelycharm

  • one year ago

Select the best possible first step to solving the system by first eliminating the x variable. 3x − 9y = 6 2x − 11y = 6

  • This Question is Closed
  1. SolomonZelman
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    multiply the first equation times 2, and multiply the second equation times -3. Then, add the equations together.

  2. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    ^^^^^^

  3. lovelycharm
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    6x-18y=12 -6x+33y=-18

  4. SolomonZelman
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    yes, then add the equations:

  5. lovelycharm
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    15=30

  6. SolomonZelman
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    |dw:1443661015365:dw|

  7. SolomonZelman
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    you are adding the *x*'s, the *y*'s and the right sides (12 and 18), separately.

  8. lovelycharm
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Multiply the first equation by −2, and multiply the second equation by 3. Multiply the first equation by −2, and multiply the second equation by −3. Multiply the first equation by 2, and multiply the second equation by 3. None of the above

  9. lovelycharm
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    those the choices

  10. SolomonZelman
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    Well, I offered: multiply the first equation times 2, and multiply the second equation times -3 (then add the equations -- result#1) then try: multiply the first equation times -2, and multiply the second equation times 3 (then add the equations -- result#2) then contrast the first and the second results.

  11. SolomonZelman
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    You will observe they are same, except that all signs are flipped.

  12. lovelycharm
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    the answer gone trun out to be 2 right cause 15/30 equal 2

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

    • Attachments:

Ask your own question

Sign Up
Find more explanations on OpenStudy
Privacy Policy

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.