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anonymous

  • 5 years ago

w/4 + 4x - 1/5 = 1/8 I need help solving this

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  1. anonymous
    • 5 years ago
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    Are you solving for x?

  2. anonymous
    • 5 years ago
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    I think so...Not quite sure...let me check to see if it tells me.

  3. anonymous
    • 5 years ago
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    When solving a rational equation the first step that we must always take would be to make sure that you convert the equation to an equation without denominators. This is the explanation I got.

  4. anonymous
    • 5 years ago
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    OK that makes sense, but it still doesn't tell us whether we should solve for x or w. Or are we just supposed to convert the equation and not solve anything? Any more hints in your instructions?

  5. anonymous
    • 5 years ago
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    That is all I got..I get so frustrated. I guess we have to find the problems in this and address them so they know what they are

  6. anonymous
    • 5 years ago
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    Shall we try solving for x then?

  7. anonymous
    • 5 years ago
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    I guess...just so you know...to give a heads up..I am horrible at this stuff...I get so confused

  8. anonymous
    • 5 years ago
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    No problem, I'll try my best to help you understand :)

  9. anonymous
    • 5 years ago
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    Thank you so much

  10. anonymous
    • 5 years ago
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    Do you have a guess as to how to start, or should I show the first step?

  11. anonymous
    • 5 years ago
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    This week is a confusing week for me...just as I get the hang of things I get confused then frustrated...

  12. anonymous
    • 5 years ago
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    ok so scratch that question...

  13. anonymous
    • 5 years ago
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    That's ok, it happens to all of us. The first thing we need to do is find the Least Common Denominator (the LCD). Do you know how to do that

  14. anonymous
    • 5 years ago
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    I have one that I did, but he wants the original rational equation of this 10 + 4(x – 2) = 5(x) 10 + 4x – 8 = 5x 4x + 2 = 5x 2 = x or x= 2

  15. anonymous
    • 5 years ago
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    I thought I had did this...and that this answer was it...apparently not....lol

  16. anonymous
    • 5 years ago
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    Hang on, I'm confused. Does this have anything to do with the first problem you posted or have we moved on?

  17. anonymous
    • 5 years ago
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    moved on...I just asked one of the girls in my class by text and she said not to worry about the first one...fix the stuff we did wrong individually...sorry

  18. anonymous
    • 5 years ago
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    OK. So he wants the original rational equation of 10+4(x-2)=5x?

  19. anonymous
    • 5 years ago
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    yes

  20. anonymous
    • 5 years ago
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    I thought I had done this..with all the work I did...not so much he said

  21. anonymous
    • 5 years ago
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    Well, a rational equation is an equation that has fractions in it. I think he wanted you to manipulate the equation he gave to look like one. Instead, what you did was solve for x. More coming...

  22. anonymous
    • 5 years ago
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    ok see now I am getting confused...

  23. anonymous
    • 5 years ago
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    What I think you have to do is distribute the 4 like you did so that you get 10+4x-8=5x, then divide both sides of the equation by 40 to get a rational equation

  24. anonymous
    • 5 years ago
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    Can you maybe tell me more about what you're confused about in specific?

  25. anonymous
    • 5 years ago
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    most of it....I am just not a math person at all....not sure why it never clicked for me.

  26. anonymous
    • 5 years ago
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    I hate the fact I have to ask for help...

  27. anonymous
    • 5 years ago
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    Don't worry about it. Math is chalenging and everyone struggles with it. Plus, it's confusing when you're being tutored online

  28. anonymous
    • 5 years ago
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    Back to the problem...

  29. anonymous
    • 5 years ago
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    sure...I will be checking in a few at a time..I have 2 very sick little girls...sorry if I do not respond right away... I will be back if not:)

  30. anonymous
    • 5 years ago
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    So, a rational equation is an equation that has fractions in it. Like this one (just a random example): x/2+1=x/8

  31. anonymous
    • 5 years ago
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    We want to make the equation you were given look something like that.

  32. anonymous
    • 5 years ago
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    According to your instructions anyway

  33. anonymous
    • 5 years ago
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    So here's what I would do. Take the equation 10 + 4(x – 2) = 5(x)

  34. anonymous
    • 5 years ago
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    Sorry...

  35. anonymous
    • 5 years ago
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    Step 1. Find the least common multiple of 10, 4, and 5. It is 20 because 20 is the smallest number that can divide evenly into 10, 4, and 5

  36. anonymous
    • 5 years ago
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    No problem

  37. anonymous
    • 5 years ago
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    Step 2. Divide every term in the equation by 20. It will look like this: 10/20 + 4(x – 2)/20 = 5(x)/20

  38. anonymous
    • 5 years ago
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    Step 3. Simplify the fractions. It will look like this: 1/2+(x-2)/5=x/4

  39. anonymous
    • 5 years ago
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    And this looks like a rational equation, so I believe this is what your teacher wants

  40. anonymous
    • 5 years ago
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    Thank you so much!! I think I understand this better:) Your great!

  41. anonymous
    • 5 years ago
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    You're welcome. :) So glad I could help. I'm kinda new to this online tutoring thing, so I was nervous.

  42. anonymous
    • 5 years ago
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    Do you have other questions or more questions about this problem?

  43. anonymous
    • 5 years ago
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    no...thank you so much:)

  44. anonymous
    • 5 years ago
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    You're welcome :)

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spraguer (Moderator)
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