Question

_____ divided by (-1) = -31

Answer 1

We need to find a number that divided by -1 gives -31

So we call that number "X" and create a simple equation to solve for this representing the operations needed:

x divided by "-1" equals -31

If we multiply both sides of this equation by the value "-1" we can get "x"isolated on one side and have the answer:

`(x)/(-1)=-31`

Multiplying both sides by (-1) we get to cancel that -1 in the denominator of x:

`\begin{gathered} (x)/(-1)\cdot(-1)=-31\cdot(-1) \\ x\text{ = -31 }\cdot\text{(-1)} \\ x\text{ = 31} \end{gathered}`

Notice that multiplying on the right by -1 also changed the signe of -31 making it positive 31

Therefore x must be 31

So you write:

31 divided by (-1) = -31