Question

Tick (✓) the correct answer
${\left(\frac{-3}{7}\right)}^{-1}=?$
(a) $\frac{7}{3}$
(b) $\frac{-7}{3}$
(c) $\frac{3}{7}$
(d) none of these

Answer 1

(b) $\frac{-7}{3}$

${\left(-\frac{3}{7}\right)}^{-1}\Rightarrow \mathrm{Reciprocal}\mathrm{of}\frac{-3}{7}$

The reciprocal of $\frac{-3}{7}$ is $\frac{7}{-3},\mathrm{i}.\mathrm{e}.,\frac{-7}{3}$