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$Let\ a\ be\ a\ non-zero\ number. Calculate\ a \cdot \frac{1}{a} + a \cdot \frac{1}{-a}$.$

Guest Mar 29, 2023

RonnieChen · Answer 1 · 2023-03-29T10:14:24

$a\times\frac{1}{a}+a\times\frac{1}{-a}=1+(-1)=0$

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