A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

anonymous

  • one year ago

Solve the following system of equations. 4x+5y = 5 8x+5y = 25 i need to find what x and y equals

  • This Question is Closed
  1. pooja195
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 2

    You need to find a common factor first 4x+5y = 5 8x+5y = 25 In this case it is -2 :) Bascially ask yourself which number will i need to multiply to get opposite x values that will cancel out \(\huge\rm\color{red}{-2(4x+5y = 5)}\) Tell me the equation you get once you distribute

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

    -8x-10y=-10 not sure if this is right I'm kinda bad at math @pooja195

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

    Thats correct good! :D \[\huge~\rm-8x-10y=-10\] \[\huge~\rm~~~~~8x+5y = 25 \] Now just do simple math whats \(\huge\rm\color{red}{-8+8=?}\)

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

    -8 +8 is 0 lol

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

    Good so that cancels out :) -10+5= ?

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

    Need help?

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

    -10+5 = -5???

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

    good so we have -5y=15 i added the -10+25 ok now that we have that -5y=15 we divde both sides by -5 -5 div -5=1 therefore x is alone now :P whats 15/-5 ?

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

    15/-5 = -3?

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

    @pooja195

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

    Yes thereofore our y value is -3 now we use substituion to figure out our x value \[\huge~\rm −8x−10(-3)=−10\] solve for x

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

    im kinda stuck to be honest -.- I'm so bad at math

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

    \[\huge~\rm~−8x−(10)(−3)=−10\] Simplify both sides of the equation. \[\huge~\rm~−8x+30=−10\] Subtract 30 from both sides. \[\huge~\rm~−8x+30−30=−10−30\]\[\huge~\rm~−8x=−40\] Divide both sides by -8 Take it from here :)

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

    so x would be 5 right ?

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

    yes! :D good job :) (5,-3)

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

    thank you so much

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

    No problem :D

  18. 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.