Quantcast

Got Homework?

Connect with other students for help. It's a free community.

  • across
    MIT Grad Student
    Online now
  • laura*
    Helped 1,000 students
    Online now
  • Hero
    College Math Guru
    Online now

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

ryanpauls

Solve the equation. Check the solution. -2/(x+4) = 4/(x+3) a. -13/6 b. -11 c. -8/3 d. -11/3

  • one year ago
  • one year ago

  • This Question is Closed
  1. ryanpauls
    Best Response
    You've already chosen the best response.
    Medals 0

    also could you show your work? I am not sure how to do this because of the equal sign

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

    Use the rule:\[\frac{ a }{ b }=\frac{ c }{ d } \Leftrightarrow ad=bc\]so: -2((x+3)=4(x+4) expand the brackets, collect like terms and solve for x.

    • one year ago
  3. FibonacciChick666
    Best Response
    You've already chosen the best response.
    Medals 1

    so first relieve yourself of the fractions by multiplying the denominators on both sides and get: \[-2/(x+4)=4/(x+3)\] \[-2(x+3)=4(x+4)\] now distribute the -2,4 \[-2x-6=4x+16\] finally solve for x by combining like terms \[-2x=4x+16+6\] \[-6x=22\] \[x=-22/6\] this reduces to \[x=-11/3\] therefore our answer is d.

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

    thanks! i just tried it out like that and I got the same answer.

    • one year ago
  5. FibonacciChick666
    Best Response
    You've already chosen the best response.
    Medals 1

    do you understand the process?

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

    yes

    • one year ago
  7. FibonacciChick666
    Best Response
    You've already chosen the best response.
    Medals 1

    good! =D

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

    what about: Simplify the sum (x-2)/(x+3) + (10x)/(x^2-9) I have this: (x-2)/(x+3) + (10x)/(x+3)(x-3) I know the x+4 cancels out, but what do I do to the top?

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

    i meant x+3 cancels out

    • one year ago
  10. FibonacciChick666
    Best Response
    You've already chosen the best response.
    Medals 1

    ok so what you want to do is multiply the first fraction by a fraction that simplifies to 1. pick something that gives you the same denominator

    • one year ago
    • Attachments:

See more questions >>>

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.