Question

Comment whether the given rational numbers represent the equivalent rational numbers.
$\frac{-7}{21}and\frac{3}{9}$ [2 marks]

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 the lowest form] (1 mark)

$\because \frac{-1}{3}\ne \frac{1}{3}$
$\therefore \frac{-7}{21}and\frac{3}{9}$ are not equivalent rational numbers.

(1 mark)