Question
Express $\frac{4}{7}$ as a rational number with denominator $-35$
✓
Answer
Rational number $=\frac{4}{7}$
$-35=7\times(-5)$
$\therefore\frac{4}{7}=\frac{4\times(-5)}{7\times(-5)}=\frac{-20}{-35}$
$-35=7\times(-5)$
$\therefore\frac{4}{7}=\frac{4\times(-5)}{7\times(-5)}=\frac{-20}{-35}$
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