Write the following rational numbers with positive denominators.
$\frac{- 7}{- 19}$

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Solution

Given rational number: $\frac{- 7}{- 19}$
Now to make denominator positive we have to multiply both numerator and denominator by $- 1$
So, $\frac{- 7 \times - 1}{- 19 \times - 1} = \frac{7}{19}$
Hence, $\frac{7}{19}$ is a rational number with positive denominator.

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