Question

What must be subtracted from $-1$ to get $-6$?

Answer 1

Find the number which will be subtracted from $-1$ to get $-6$.

Let the number be $a$.

According to the question:

$$\begin{gathered} -1-a=-6 \\ \Rightarrow -a=-6+1 \\ \Rightarrow -a=-5 \\ \therefore a=5 \end{gathered}$$

Hence, the required number is $5$.