anonymous
  • anonymous
I need to solve this equation 2x over 5 + 5x=4 over 3
Mathematics
jamiebookeater
  • jamiebookeater
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anonymous
  • anonymous
\[2x/5+5x=4/3\] \\[[x(2/5+5)=4/3\]\]
anonymous
  • anonymous
\[x(27/5)=4/3\]
anonymous
  • anonymous
\[x=20/(27*3\]

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anonymous
  • anonymous
\[x=20/81\]
anonymous
  • anonymous
Where did you get the x=20? by 4*5?
anonymous
  • anonymous
you can simplify this equation by multiplying each side by 3: 6x/(5+5x)=4 factor out a 5 in the denominator: 6x/(5(1+x))=4 multiply both sides by 5: 6x/(1+x)=20 multiply by (1+x): 6x=20+20x subtract 20x: 6x -20x=20 -14x=20 divide by -14 x=20/-14=-10/7
anonymous
  • anonymous
20/81 is not correct
anonymous
  • anonymous
i failed !
anonymous
  • anonymous
I got it...
anonymous
  • anonymous
The book has 20/81 for an answer
anonymous
  • anonymous
hi5
anonymous
  • anonymous
fan me !
anonymous
  • anonymous
ill write it out more clearly wait
anonymous
  • anonymous
i must have written the equation wrong i thought it was 2x/(5+5x)=(4/3)
anonymous
  • anonymous
Thank you soo much!!!
anonymous
  • anonymous
@stair.. Yes, I see the 6x instead of 2x.
anonymous
  • anonymous
\[2x/5+5x=4/3\] \[x(2/5+5)=4/3\] \[x(27/5)=4/3\] \[x=4/3*5/27\] \[x=20/81\]
anonymous
  • anonymous
Thanks again!!
anonymous
  • anonymous
no problem.

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