Solve the Expression: Finding the Correct Operator in -53 ? +3 > 0

Let's begin by observing the exercise on the left side whilst paying particular attention to the plus and minus signs.

The exercise looks like this:

$-:\text{?:}+=$

If we solve the equation from left to right, we can observe that we first divide a negative number by an unidentified integer:

$-:\text{?}$

Our result needs to be greater than zero, therefore our first operation must give us a positive number, so that in the final operation the resulting number will be positive.

Therefore:

$-:-:+=$

$+:+=+$

+ > 0

Therefore the answer is $-\frac{1}{4}$