Question

Express $\frac{-3}{7}$ as a rational number with

denominator $=-49$

Answer 1

To make the denominator $-49,$ we need to use concept of equivalent fractions. Equivalent fractions are those fractions in which numerator and denominator are multiplied by the same non zero number.

$\frac{-3}{7}=\frac{-3\times -7}{7\times -7}=\frac{21}{-49}$

Hence, $\frac{-3}{7}$ with $-49$ as a denominator is $\frac{21}{-49}.$