You can put this solution on YOUR website! 15y^3 /[(25t^3y^4)-(20uy^5)]
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Factor the denominator for possible canceling:
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15y^3 /[(25t^3y^4)-(20uy^5)]
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15y^3 / [5y^4(5t^3-4uy)]
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Cancel the common factor of 5y^3 to get:
3 / [y(5t^3-4uy)]
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Cheers,
Stan H.