A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

anisah.21a

  • one year ago

5 x − 7 y = −8 −7 x + 2 y = −20 How to solve for x and y with substitution method

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

    5x-7y=-8 isolate x 5x=7y-8

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

    then?

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

    it gives you x=7/5y-8/5

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

    \[x=\frac{ 7y-8 }{ 5 }\]

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

    yes that is correct

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

    so that is x?

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

    now sub in the other equation

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

    yes, it is

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

    not right answer

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

    it doesn't give me a long enough response for the x value when i try to submit the answer . ive tried it many times

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

    ok are you using math lab?

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

    x=(7/5)y-(8/5)

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

    try that one

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

    are you looking for the solution

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

    yes

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

    not a long response but one number

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

    x=4 y=4

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

    how did you get that?

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

    There are many ways to do this problem

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

    I used my calculator

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

    may i ask, what you did on the calculator?

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

    i'll rate you best response if you explain yourself and not just tell me the answer, thank you.

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

    I did explain it. I have to go now

  24. 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.