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September 30, 2014

September 30, 2014

Posted by **Nora Escobedo** on Tuesday, October 11, 2011 at 1:56am.

- Math -
**Steve**, Tuesday, October 11, 2011 at 4:28amLearn to add/subtract exponents:

27x^-2y^6/3x^5y^2z^9

= 27/3 * x^(-2-5) y^(6-2) z^(0-9)

= 9 x^-7 y^4 z^-9

= 9y^4/(x^7 z^9)

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