Add the following rational numbers:
$ \frac{-5}{9}+\frac{7}{15} $

Academic Mathematics NCERT Class 7

Given:

\( \frac{-5}{9}+\frac{7}{15} \)

To do:

We have to add the given rational numbers.
Solution:

$\frac{-5}{9}+\frac{7}{15}=\frac{-5\times5+7\times3}{45}$ (LCM of 9 and 15 is 45)

$=\frac{-25+21}{45}$

$=\frac{-4}{45}$

Therefore, $\frac{-5}{9}+\frac{7}{15}=\frac{-4}{45}$.

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Updated on: 10-Oct-2022

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