Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

blkbutterfly13

  • 3 years ago

Use substitution to solve. 3x+24y=24 27x-15y=-15

  • This Question is Closed
  1. kjmoney
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    multiply the top equation by -9 to cancel out the x's. Then you can solve for y. Once you have that, plug the y back in to find the x.

  2. zzr0ck3r
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    this is not substitution @kjmoney

  3. zzr0ck3r
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    solve for x in the first equation(you could solve for any variable in either equation but this one looks like the best choice) 3x+24y = 24 3x = 24-24y x = 8 - 8y now put this into equation2 for x 27x-15y = -15 so 27(8-8y) - 15y = -15 can you solve for y here @blkbutterfly13 ?

  4. blkbutterfly13
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    @zzr0ck3r thanks, that's how I started off but it didn't look right. I just needed a second opinion.

  5. zzr0ck3r
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    you got it now? solve for y, then plug that value into either equation and solve for x

  6. blkbutterfly13
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    yes I did, thank you so much!!

  7. zzr0ck3r
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    np

  8. 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