Question 219574
I'm glad you recognize that dividing by zero is impossible/undefined. (It is <b>not</b> 0!)<br>
You'll have to post the rest of the problem so we can see how you ended up with {{{-4/0}}}. If {{{-4/0}}} is correct it may mean something in the context of the overall problem. For example, if you are calculating the slope of a line, an answer of {{{-4/0}}} means the slope is undefined. And lines with undefined slopes are vertical lines. (Vertical lines have equations of the form x = a where "a" is the x coordinate of any point on the line. (All the x coordinates on a vertical line are the same!))<br>
Or perhaps an error was made and you should not end up with {{{-4/0}}}.