Does the following pairs represent the same rational number:
$\frac{- 2}{- 3}$ and $\frac{2}{3}$

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Solution

$\frac{- 2}{- 3} = \frac{- 1 \times 2}{- 1 \times 3} = \frac{2}{3}$
$\frac{2}{3} = \frac{1 \times 2}{1 \times 3} = \frac{2}{3}$
Since both numbers are $\frac{2}{3}$ , thus they are same.

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