anonymous
  • anonymous
Complex Fractions.... How do I simplify 2 - 8 over X+4 divided by 3 - 12 over X+4?
Mathematics
schrodinger
  • schrodinger
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anonymous
  • anonymous
15
anonymous
  • anonymous
The answer is two thirds but I confused with the steps.
anonymous
  • anonymous
me to

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anonymous
  • anonymous
[(2 - 8) / (X+4)] / [(3 - 12) / (X+4)] = [-6 / (X+4)] / [-9 / (X+4)] = [-6 / (X+4)] * [(X+4) / -9] The (x+4)s cancal out, so you have -6/-9 = 2/3
anonymous
  • anonymous
just look in google
anonymous
  • anonymous
the 4x cancels out the X+4?
anonymous
  • anonymous
no x-4 cancels out with x-4
anonymous
  • anonymous
ok thanks!
anonymous
  • anonymous
I have another question, what is 8/x+4 times 8x?
anonymous
  • anonymous
[8/(x+4)] * 8x or (8/x) + 4 *8x ?
anonymous
  • anonymous
first one
anonymous
  • anonymous
[8/(x+4)] * 8x = 64x / (x+4)[8/(x+4)] * 8x = 64x / (x+4) You can't really simplify further
anonymous
  • anonymous
whoops ignore the second line
anonymous
  • anonymous
ahh still confused methods haha thanks a bunch!
anonymous
  • anonymous
no problem, good luck!

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