A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

anonymous

  • one year ago

Arrange the steps to solve this system of linear equations in the correct sequence. x + y = -2 2x – 3y = -9

  • This Question is Closed
  1. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    I need the order of the steps from beginning to end

  2. pooja195
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Do you know how to solve it?

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

    I have a general idea of how to solve it I'm just not completely sure. I mostly just end up putting the steps in the wrong order

  4. pooja195
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    ok show me how you solve it then :) show me what order you would put the steps in.

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

    well I'm pretty sure you have to combine the equations then distribute

  6. pooja195
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    hmm an easier approach would be elimination are you familiar with the method?

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

    no

  8. pooja195
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    whats the opposite of 2?

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

    -2

  10. pooja195
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    -2(x + y = -2) 2x – 3y = -9 Step 1: Distribute the -2 -2(x + y = -2)

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

    The question gives me a list of steps, and I'm supposed to put them in the correct order, so what I really need is someone to help me figure out the sequence of steps

  12. pooja195
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Is there a way you can paste them on to this post?

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

    yes wait a moment

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

    a. subtract 3x+3y=-6 (obtained in step one) from 2x-3y=-9 (given) to solve for x b. substitute the value of x in the first equation (x+y=-2) to get y=1 c. The solution for the systems of equations is (-3,1) d. x=-15 e. The solution for the systems of equations is (-15,13) f. add 3x+3y=-6(obtained in step one) to 2x-3y=-9(given), and solve for x g. x=-3 h. substitute the value of x in the first equation (x+y=-2) to get y=13 i. multiply the first equation by 3: 3(x+y)=3(-2) 3X+3Y=-6

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

    there is a total of 5 steps

  16. pooja195
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    O-o huh? :/ i dont get this...

  17. pooja195
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    @jim_thompson5910

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

    we have to figure out the order of these steps

  19. jim_thompson5910
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 2

    |dw:1437360006983:dw|

  20. jim_thompson5910
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 2

    |dw:1437360016344:dw|

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

    I don't know

  22. jim_thompson5910
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 2

    do you agree that 3y plus -3y = 0y ?

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

    yes

  24. jim_thompson5910
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 2

    so what we have to do is multiply everything in equation 1 by 3 to go from x + y = -2 to 3x + 3y = -6

  25. jim_thompson5910
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 2

    new system of equations 3x + 3y = -6 2x – 3y = -9

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

    so that would be the first step? multiply everything by 3?

  27. jim_thompson5910
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 2

    yeah in eq 1

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

    okay, what's next?

  29. jim_thompson5910
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 2

    now you add the equations the 3y and -3y add to 0 and go away

  30. jim_thompson5910
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 2

    that leaves just x to solve for

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

    so how would I solve for x?

  32. jim_thompson5910
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 2

    what do you get when you add the equations

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

    5x

  34. jim_thompson5910
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 2

    5x equal to what?

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

    -15

  36. jim_thompson5910
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 2

    5x = -15 ----> x = ???

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

    -3

  38. jim_thompson5910
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 2

    yes

  39. jim_thompson5910
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 2

    you plug that x value into any equation with x & y in it, then solve for y

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

    so after adding the two equations what is the next step? I posted the options above

  41. jim_thompson5910
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 2

    give it a shot and tell me what the order would be (based off what we've done so far)

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

    The question doesn't ask for me to solve it. It just wants me to put the steps in order

  43. jim_thompson5910
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 2

    you actually do have to solve it

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

    based on what we've done I'd say the next step would be x=-3

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

    and then substitute the value of x in the first equation to get y=1

  46. jim_thompson5910
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 2

    yes so the solution is (-3,1)

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

    thank you

  48. jim_thompson5910
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 2

    np

  49. 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.