Find the value of:
$ \frac{-4}{9}+\frac{5}{7} $

Academic Mathematics NCERT Class 7

Given:

\( \frac{-4}{9}+\frac{5}{7} \)

To do:

We have to find the value of \( \frac{-4}{9}+\frac{5}{7} \).

Solution:

\( \frac{-4}{9}+\frac{5}{7} \)$=\frac{(-4\times7+5\times9)}{63}$ (LCM of 9 and 7 is 63)

$=\frac{-28+45}{63}$

$=\frac{17}{63}$

Therefore,

\( \frac{-4}{9}+\frac{5}{7} \)$=\frac{17}{63}$.

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Updated on: 10-Oct-2022

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