Question
Express $\frac{5}{7}$ as a rational number with numerator:
-28
-28
✓
Answer
$\frac{5}{7}$ as a rational number with denominator:
-28 is:
$\frac{5\times-4}{7\times-4}=\frac{-20}{-28}$
(Multiplying numerator and denominator by -4)
-28 is:
$\frac{5\times-4}{7\times-4}=\frac{-20}{-28}$
(Multiplying numerator and denominator by -4)
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