A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

anonymous

  • one year ago

which is the solution to the equation 3x -4=5(x-4)?

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

    @jim_thompson5910

  2. jim_thompson5910
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    what do you have so far

  3. jim_thompson5910
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    absolute value? I don't see any absolute value bars in the original problem `3x -4=5(x-4)`

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

    Mistake on my part.

  5. jim_thompson5910
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    can you draw out the full problem?

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

    \[3x-4=5(x-4)\]

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

    like that?

  8. jim_thompson5910
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    are there any vertical bars in the problem?

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

    I made a big mistake. Hold on.

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

    x=0?

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

    X=0 because different multiplications of X are being subtracted by 4. 3x3=9-4=5 5x3=15-4=9 5 does not equal 9. 3x0=0-4=-4 and 5x0=0-4=-4 but negative 4 equals negative 4 so the answer is X= 0?

  12. jim_thompson5910
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    is it possible to post a screenshot? that would clear up all confusion

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

    The question isn't online.

  14. jim_thompson5910
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    oh it's on paper, I see

  15. jim_thompson5910
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    I'm going to assume there is no set of absolute value bars The first step is to distribute the 5 through 3x -4=5(x-4) 3x -4=5*x-5*4 3x -4 = 5x - 20 with me so far?

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

    There are no bars. I am with you

  17. jim_thompson5910
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    ok now we need to move the x terms over to one side. Say the left side

  18. jim_thompson5910
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    |dw:1443245964641:dw|

  19. jim_thompson5910
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    subtract 5x from both sides |dw:1443246000337:dw|

  20. jim_thompson5910
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    notice the 5x terms cancel on the right side |dw:1443246026894:dw|

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

    Oh ok!

  22. jim_thompson5910
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    what is 3x-5x equal to?

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

    243? Probabaly wrong. defiantly

  24. jim_thompson5910
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    you're just subtracting

  25. jim_thompson5910
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    no exponents are involved

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

    Explain a little more? My brain is about to shut down on me lol I can barely think, im so tired.

  27. jim_thompson5910
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    I'm sure you know how to do 5-3 ?

  28. jim_thompson5910
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    think of it like that, but the result will be negative

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

    yes I do lol

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

    -2 then

  31. jim_thompson5910
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    you have 3 dollars in your pocket you buy something worth $5 you'll be 2 dollars in debt

  32. jim_thompson5910
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    so 3x-5x = -2x

  33. jim_thompson5910
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    -2x - 4 = -20

  34. jim_thompson5910
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    now add 4 to both sides to move that 4 over

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

    But thats not the final answer?

  36. jim_thompson5910
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    no

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

    How do I add four to both sides? LOL ugh..

  38. jim_thompson5910
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    Yeah I know, I'm being a pain. But it's good to know how to do this stuff |dw:1443246705151:dw|

  39. jim_thompson5910
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    |dw:1443246723579:dw|

  40. jim_thompson5910
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    |dw:1443246739406:dw|

  41. jim_thompson5910
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    what would -20+4 simplify to?

  42. jim_thompson5910
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    it would be similar to -5+3 like you did last time

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

    -24?

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

    or -16?

  45. jim_thompson5910
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    -16 actually start at -20. Then move 4 spots to the right (because of the +4)

  46. jim_thompson5910
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    we now have this equation -2x = -16

  47. jim_thompson5910
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    |dw:1443246871534:dw|

  48. jim_thompson5910
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    |dw:1443246883800:dw|

  49. jim_thompson5910
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    |dw:1443246918084:dw|

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

    ok.

  51. jim_thompson5910
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    the last thing needed to be done is dividing -16 over -2

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

    -8? maybe?

  53. jim_thompson5910
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    the two negatives divide to a positive

  54. jim_thompson5910
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    just like how (-2) times (-2) = +4 similar to negative times negative = positive

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

    So its either x=8 or x=0.

  56. dm91
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    x=8

  57. jim_thompson5910
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    0? how are you getting that?

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

    Thats just one of the options for an answer.

  59. jim_thompson5910
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    I see

  60. dm91
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    ok -16/-2= 8 because a -n and -n = +n.

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

    I kind of explained my answer for it possibly being 0 above.

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

    X=0because different multiplications of X are being subtracted by 4. 3x3=9-4=5 5x3=15-4=9 5 does not equal 9. 3x0=0-4=-4 and 5x0=0-4=-4 but negative 4 equals negative 4 so the answer is X= 0

  63. jim_thompson5910
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    well when you said -8, you were close but it's actually +8 or just 8 since negative/negative = positive

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

    Final answer 8?

  65. jim_thompson5910
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    yeah

  66. dm91
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    |dw:1443246869026:dw|

  67. 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.