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Homework Help: Algebra Question

  1. Oct 25, 2006 #1
    I was asked to solve for x,
    i tried cross multiplying x by 1.5 and 4.8 by 1.5, the moving my 2.18x over to my left side.

    (x-4.8)/1.5=2.18x
    1.5x-7.2=2.18x
    1.5x-2.18x=7.2
    -.68x=7.2
    -.68/-.68=7.2/.-.68
    x=10.5

    Did i do this correctly
     
  2. jcsd
  3. Oct 25, 2006 #2
    no you did not do it correctly


    [tex] \frac{x-4.8}{1.5} = 2.18x [/tex]


    [tex] x-4.8 = ? [/tex]



    [tex] x = ? [/tex]
     
  4. Oct 25, 2006 #3

    Office_Shredder

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    No. (x-4.8)/1.5 does NOT equal 1.5x -7.2

    What you would do is multiply both sides by 1.5:

    (x-4.8)/1.5=2.18x
    1.5*(x-4.8)/1.5=2.18x*1.5
    x-4.8=3.27x
     
  5. Oct 25, 2006 #4
    what software do you use?

    on a slight tangent, what software do you use to type all these mathematical notations. I'm putting together a math portfolio and I'm using word which is not very accurate in terms of mathematical notation........thank you. plz reply asap!
     
  6. Oct 25, 2006 #5
    its called LaTex. you can type it in the forums using [tex ] [/tex ] (with no spaces). You can also download MikTeX if you have Windows to get LaTex.
     
  7. Oct 25, 2006 #6
    oh ok...and can I use latex as an application, as in I can print the doc once I'm done...it is not html?
     
  8. Oct 25, 2006 #7
    no, its not html. you can print the document once
     
  9. Oct 25, 2006 #8
    oh all right thanks for the fast reply.
     
  10. Oct 26, 2006 #9
    thanks i see what i didnt do
     
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