Question:
The product of two rational numbers is −9. If one of the numbers is −12, find the other.
Solution:
Let the number be $\mathrm{x}$.
Now,
$\mathrm{x} \times(-12)=-9$
$\Rightarrow \mathrm{x}=-9 \div(-12)$
$\Rightarrow \mathrm{x}=(-9) \times \frac{1}{-12}$
$\Rightarrow \mathrm{x}=\frac{-9}{-12}$
$\Rightarrow \mathrm{x}=\frac{3}{4}$
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