Question

Question 108(iii)
Verify the property $x\times y=y\times x$ of rational numbers by using
$x=\frac{-5}{7}$ and $y=\frac{14}{15}$

Answer 1

Given, $x=\frac{-5}{7}$ and $y=\frac{14}{15}$

Then,
$LHS=x\times y=\frac{-5}{7}\times \frac{14}{15}=\frac{-2}{3}$

$RHS=y\times x=\frac{14}{15}\times \frac{-5}{7}=\frac{-2}{3}$

$\therefore LHS=RHS\Rightarrow x\times y=y\times x$

Hence verified.