A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

anonymous

  • 5 years ago

the second of two numbers is 1 more than twice the first. their sum is 25. find the numbers

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

    So what are the two equations we can get from this?

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

    y=x+2+1 ?? x+y+25

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

    i mean X*2+1

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

    Correct (and I assume you meant x + y = 25).

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

    yes. lol

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

    Ok, so how can you solve this system?

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

    x+x*2+1=25

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

    5x=25

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

    Hm. Where did you get 5x from?

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

    this is where i am having a prob. I get confused on what to add or multiply first

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

    The easiest way is to group like terms (e.g, terms with x) and then go left to right. For example, in this case they're already grouped: x + 2x + 1 = 25 So we ask ourselves, what is x + 2x?

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

    3x+1=25 ??

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

    Right. So then what do you do to bring the 1 to the right?

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

    -1

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

    x=8

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

    Perfect :)

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

    y=17

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

    how do I know if i am solving for x or y?

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

    Right on.

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

    You have to solve for both. For the first step, you just have to pick one.

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

    I have a hard time with setting it up. sometimes I do X and sometimes it's y

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

    As long as you make sure to keep referring to the same variable as x and y throughout, your result should make sense at the end. You can check it by going out to your very first equation and plugging in your answers and making sure that the numbers on both sides are actually equal.

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

    thank you

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

    No problem.

  25. 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.