Question
Express $\frac{-8}{11}$ as a rational number with denominator $-55$
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Answer
Rational number $=\frac{-8}{11}$
$-55=11\times(-5)$
$\therefore\frac{-8}{11}=\frac{-8\times(-5)}{1\times(-5)}=\frac{40}{-55}$
$-55=11\times(-5)$
$\therefore\frac{-8}{11}=\frac{-8\times(-5)}{1\times(-5)}=\frac{40}{-55}$
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