Question

The product of two rational numbers is −9. If one of the numbers is −12, find the other.

Answer 1

$$\begin{gathered} \mathrm{Let}\mathrm{the}\mathrm{number}\mathrm{be}\mathrm{x}. \\ \mathrm{Now}, \\ \mathrm{x}\times (-12)=-9 \\ \Rightarrow \mathrm{x}=-9÷(-12) \\ \Rightarrow \mathrm{x}=(-9)\times \frac{1}{-12} \\ \Rightarrow \mathrm{x}=\frac{-9}{-12} \\ \Rightarrow \mathrm{x}=\frac{3}{4} \end{gathered}$$