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anonymous

  • one year ago

I'll fan & medal!! Find the sum.

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  1. anonymous
    • one year ago
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    \[\frac{ 5 }{ xy } + \frac{ x ^{2} }{ y ^{2}}\]

  2. DanJS
    • one year ago
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    you can only add fractions if they have the same bottom denominators, so need to do something , mulitply by the common denominator first...

  3. anonymous
    • one year ago
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    the common denominator is xy^2

  4. DanJS
    • one year ago
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    \[[\frac{ 5 }{ xy }+\frac{ x^2 }{ y^2 }]*\frac{ xy^3 }{ xy^3 }\]

  5. anonymous
    • one year ago
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    5x^2 is the numerator?

  6. anonymous
    • one year ago
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    |dw:1437497964405:dw|

  7. DanJS
    • one year ago
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    The common denominator is the product of the two, then multiply by that over itself, the same as multiplying by 1...

  8. anonymous
    • one year ago
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    i dont gt it

  9. DanJS
    • one year ago
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    \[[\frac{ 5 }{ xy }+\frac{ x^2 }{ y^2 }]*\frac{ xy^3 }{ xy^3 } = \frac{ 5y^2 }{ xy^3 }+\frac{ x^3 y}{ xy^3 } =\]

  10. DanJS
    • one year ago
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    now you can add them since they are both over xy^3

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spraguer (Moderator)
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