Question

Simplify the following subtraction expression.

$\left(-6\right)-6$

Answer 1

$$\begin{gathered} =\left(-6\right)-6 \\ =-6-6 \\ =-12 \end{gathered}$$ ( Rule: $\left(+\right)\times \left(-\right)=\left(-\right)$ )

Hence, $\left(-6\right)-6=-12$