Question
Does the pair represent the same rational numbers $\frac{-7}{21} \text { and } \frac{3}{9}$?

Answer

We have, $\frac{-7}{21} \text { and } \frac{3}{9}$
Here,
$-\frac{7}{21} = - \frac{3}{9}$
And,
$\frac{3}{9}=\frac{1}{3}$
Clearly,
We can see that,
$\frac{1}{3} \neq-\frac{1}{3}$
Hence, it does not represent the same rational number.

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