Question

Question 6 (i)

Which of the following pairs represent the same rational numbers:
$\frac{-7}{21}and\frac{3}{9}$

Answer 1

$\frac{-7}{21}and\frac{3}{9}$
$\Rightarrow \frac{-7}{21}=\frac{-1}{3}and\frac{3}{9}=\frac{1}{3}$ [Converting into lowest term]
$\because \frac{-1}{3}\ne \frac{1}{3}\therefore \frac{-7}{21}\ne \frac{3}{9}$