Question
Express $\frac{-3}{5}$ as a rational number with denominator.
20
20
✓
Answer
20 = 5 × 4
$\frac{-3}{5}=\frac{-3\times4}{5\times4}$
(Multiplying numerator and denominator by 4)
$=\frac{-12}{20}$
$\frac{-3}{5}=\frac{-3\times4}{5\times4}$
(Multiplying numerator and denominator by 4)
$=\frac{-12}{20}$
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