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anonymous

  • 5 years ago

2x +5/10x + 3 = 1/3 solve for x

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  1. anonymous
    • 5 years ago
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    2x +5/10x + 3 = 1/3 25/10x+3=1/3 25/10x=-8/3 x=-16/15

  2. anonymous
    • 5 years ago
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    where did 25 come from

  3. anonymous
    • 5 years ago
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    majic

  4. anonymous
    • 5 years ago
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    I made 2x into a fraction and found a common denominator to combine 2/1+5/10

  5. anonymous
    • 5 years ago
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    i dont know im sorry

  6. anonymous
    • 5 years ago
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    polpak could you help me with my question by chance?

  7. anonymous
    • 5 years ago
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    \[2x = \frac{2x*10x}{10x} = \frac{20x^2}{10x}\]

  8. anonymous
    • 5 years ago
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    let me take a moment to look it...take it in lol

  9. anonymous
    • 5 years ago
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    np, I was just correcting mm

  10. anonymous
    • 5 years ago
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    Just multiply both sides by 10x with the requirement that x cannot be 0

  11. anonymous
    • 5 years ago
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    polpak, do you mind showing me step by step

  12. anonymous
    • 5 years ago
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    Well I told you the first step.. what do you have when you multiply both sides by 10x?

  13. anonymous
    • 5 years ago
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    sorry...interrupted

  14. anonymous
    • 5 years ago
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    (2x+5)/3 = 10x/3

  15. anonymous
    • 5 years ago
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    where did the /3 on the left come from??

  16. anonymous
    • 5 years ago
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    wait.. is the original equation \[\frac{2x + 5}{10x + 3} = \frac{1}{3}\]

  17. anonymous
    • 5 years ago
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    yeah

  18. anonymous
    • 5 years ago
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    you need to use parens better when describing the problem ;p

  19. anonymous
    • 5 years ago
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    ok, so multiply both sides by 10x + 3 (with the stipulation that x cannot be -3/10)

  20. anonymous
    • 5 years ago
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    so far i have 2x + 4 = 10x/3...on the right track?

  21. anonymous
    • 5 years ago
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    no. you should have 2x + 5 = (10x + 3)/3

  22. anonymous
    • 5 years ago
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    i skipped to the next step...where 3/3 = 1 and then subtracted from other side...does x=1

  23. anonymous
    • 5 years ago
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    You can't do that

  24. anonymous
    • 5 years ago
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    Oh, I see

  25. anonymous
    • 5 years ago
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    Err wait. What did you do? x=1 isn't right

  26. anonymous
    • 5 years ago
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    4/5?

  27. anonymous
    • 5 years ago
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    no

  28. anonymous
    • 5 years ago
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    Show your work so I can figure out what you're doing

  29. anonymous
    • 5 years ago
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    so 2x + 5 = 10x +1 is that correct and i can go from there

  30. anonymous
    • 5 years ago
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    No

  31. anonymous
    • 5 years ago
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    You have to divide the whole 10x + 3 by 3, you can't just divide the 3 on top and leave the 10x alone. I suggest instead multiplying both sides by 3 to get rid of the fraction

  32. anonymous
    • 5 years ago
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    i know what i did...just noticed that...i started over with a clean piece of paper

  33. anonymous
    • 5 years ago
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    so 6x + 15 = 30x + 9

  34. anonymous
    • 5 years ago
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    no

  35. anonymous
    • 5 years ago
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    you forgot that the part on the right was divided by 3, so multiplying by 3 just cancels the denominator on the right side

  36. anonymous
    • 5 years ago
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    i left my brain behind...sorry

  37. anonymous
    • 5 years ago
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    np, it happens =)

  38. anonymous
    • 5 years ago
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    give me one minute..going to reason through...what bothers me the most...is that this looks simple and i feel like i can solve more difficult problems more easily

  39. anonymous
    • 5 years ago
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    \[3(2x + 5) = \frac{3(10x + 3)}{3}\]

  40. anonymous
    • 5 years ago
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    you should have that written on your paper

  41. anonymous
    • 5 years ago
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    so which 3's should cancel eachother out?

  42. anonymous
    • 5 years ago
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    \[\frac{3(10x + 3)}{3} = \frac{3}{3}(10x + 3) = 1(10x + 3) = 10x + 3\]

  43. anonymous
    • 5 years ago
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    ok...that was my problem....i wanted to cancel out the wrong 3...noted

  44. anonymous
    • 5 years ago
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    x = 3

  45. anonymous
    • 5 years ago
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    indeed

  46. anonymous
    • 5 years ago
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    finally lol....sorry this has been a chore...thanks for your help and patience

  47. anonymous
    • 5 years ago
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    np, just be sure to go back over the process and make sure you understand not only what we did, but why what you were doing doesn't work

  48. anonymous
    • 5 years ago
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    definitely will...starred it on my sheet as "needs more attention" lol

  49. anonymous
    • 5 years ago
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    good job =)

  50. anonymous
    • 5 years ago
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    thanks :)

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