Add the following rational number: 5 -9 and 7 3 - Vidyadip

Question

Add the following rational number:
$\frac{5}{-9}$ and $\frac{7}{3}$

✓

Answer

$\frac{5}{-9}+\frac{7}{3}$
$=\frac{-5}{9}+\frac{7}{3}$
The LCM of the denominators 9 and 3 is 9.
Now,
We wil express $\frac{7}{3}$ in the from in which it taken denominator as 9.
$\frac{7\times3}{3\times3}=\frac{21}{9}$
So,
$\frac{-5}{9}+\frac{21}{9}$
$=\frac{-5+21}{9}=\frac{16}{9}$

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