anonymous
  • anonymous
http://www.sketchtoy.com/36355459 @phi How would I do the first one? The b looking things are 6's, btw. And OP = original problem.
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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johnweldon1993
  • johnweldon1993
http://www.sketchtoy.com/36356165
phi
  • phi
you should put in + signs between the terms in the middle term, where did y^3 come from? the original has 6xy
phi
  • phi
the next step is not too hard: for the numbers 21/3 in the first fraction, replace with 7/1 or just 7 in the top

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phi
  • phi
the 6/3 in the 2nd fraction is replace with ?
phi
  • phi
hopefully you know 6/3 is 2 (or 2/1 to remind yourself, the 2 is in the top)
phi
  • phi
in the last term - 30/3 becomes ?
anonymous
  • anonymous
How would I do x^2 /x
phi
  • phi
for the letters, remember this rule: x/x = 1 for example, if you have \[ \frac{x \cdot y \cdot z}{ a \cdot b \cdot x} \] notice there is an x in the top and bottom. they "cancel" (make 1) so you can drop them
phi
  • phi
the other thing to remember is x^3 means x*x*x (it is a short hand because people did not want to write out x^10 = x*x*x*x*x*x*x*x*x*x) so you can write out x^2/x as x*x/x and cancel one set of x. you get x/1 or just x in the top
phi
  • phi
can you do this problem ?
anonymous
  • anonymous
http://www.sketchtoy.com/36357508
phi
  • phi
beautiful, a work of art, except for the last term xy/xy cancels, and leave just -10 I assume the original problem really is 6xy^3 (and not just 6xy) for the middle term?
phi
  • phi
in the middle term you can cancel x/x . They turn into 1,
phi
  • phi
can you try again?
anonymous
  • anonymous
The middle term is 6xy^3 yeah
phi
  • phi
There is really just one rule to remember: if you have the same letter in the top and bottom, you can drop both of them. They "cancel each other out" can you try again?
anonymous
  • anonymous
I fixed it

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