Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

trenvilla

  • 3 years ago

9|9 – 8x| = 2x + 3

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

    begin by isolating the absolute value...

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

    Whatever in the absolute value can be negative or positive |x| = 3 means x can equal 3 or -3

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

    So what does that tell you about this equation?

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

    @trenvilla did you get the answer?

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

    no

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

    @trenvilla sorry for taking so long... however lets turn the absolute value symbols into parantheses.

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

    ok 9(9 – 8x) = 2x + 3

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

    Distribute

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

    ok so (81+-72)=2x+3

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

    is that right

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

    81-72x=2x+3 (Personally, I hate writing +-)

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

    So combine like terms... if I were you I would keep my 'x' positive.

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

    ok so 84-74

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

    No.

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

    81-72x=2x+3 lets look at our 'x' values first.

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

    Is 72 a negative or a positive?

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

    pos

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

    No, in this equation it has a minus sign in front of it right?

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

    So in this case it is negative.

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

    o ok

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

    So how can we combine -72x and the positive 2x to keep the answer POSITIVE?

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

    i dont no how

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

    wont u have to make it -70

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

    No, you can either make this positive 74 OR -74

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

    Remember... if we had -72x = 2x If we combine we need the 'x' variable to be on one side of the equal sign

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

    ok

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

    Okay, so lets add -72x to the positive 2x

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

    81 = 74x + 3

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

    ok

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

    Can you simplify this by combing the 81 and 3?

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

    yes

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

    So what do you get?

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

    84=74x

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

    No.

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

    You had a 81 and a positive 3 on the other side of the equal sign to get the 3 to the opposite side you want to subtract 3

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

    Which would keep your 'x' on one side and the regular number on the other side

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

    o ya so 78+74x

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

    78 = 74x

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

    ya i ment =

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

    then you divide and you get \[\frac{ 78 }{ 74}\]

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

    simplify that and what do you get?

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

    1.05'

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

    ia thtat right

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

    Simplify as a fraction

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

    That is right as a decimal but you would ideally simplify to a fraction

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

    1 4 over 74

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

    Okay we have 78/74

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

    So if I were you I would divide the numerator by 2 then the denominator by 2

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

    39/37

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

    That is your answer

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

    thank you for all your help

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

    |dw:1347162650237:dw|

  53. 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