Question

Question 103

By what number should $(-15{)}^{-1}$ be divided so that quotient may be equal to $(-15{)}^{-1}$?

Answer 1

Let $(-15{)}^{-1}$ be divided by x to get quotinet $(-15{)}^{-1}$
So, $\frac{(-15{)}^{-1}}{x}=(-15{)}^{-1}\Rightarrow \frac{(-15{)}^{-1}}{(-15{)}^{-1}}=x\Rightarrow x=(-15{)}^{-1+1}\Rightarrow x=(-15{)}^0=1$