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Mybrainvsme

  • 3 years ago

okay.. simplify this.. r/r-1 - r²/r² .... good luck lol

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  1. dumbcow
    • 3 years ago
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    well, r^2/r^2 = 1

  2. dinainjune
    • 3 years ago
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    r/r-1 - 1 r-r-1/r-1 -1/r-1

  3. Nick_Black
    • 3 years ago
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    r/r-1 - r²/r² r²/r²=1 (r/r-1)-1 (r/r-1)-(r-1/r-1) r-r-1/r-1 -1/r-1

  4. Mybrainvsme
    • 3 years ago
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    where did the second r come from din?

  5. dumbcow
    • 3 years ago
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    \[\frac{r}{r-1} - 1 = \frac{r}{r-1} -\frac{r-1}{r-1} = \frac{r-(r-1)}{r-1} = \frac{1}{r-1}\]

  6. Mybrainvsme
    • 3 years ago
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    I'm sorry, how are you getting r-1/r-1?

  7. dumbcow
    • 3 years ago
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    just adding it, but because it equals 1 it doesn't change expression's value

  8. Mybrainvsme
    • 3 years ago
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    ooo

  9. dumbcow
    • 3 years ago
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    thats the only way to combine fractions, get a common denominator

  10. Mybrainvsme
    • 3 years ago
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    hmm

  11. Mybrainvsme
    • 3 years ago
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    thanks for your explanations dumbcow.

  12. dumbcow
    • 3 years ago
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    no problem, thats how you learn thanks for wanting them :)

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