Answer:
The answer is

Explanation:
In order to determine the answer, we have to know that it means "solution".
In any expression where there is a variable, we can replace any value in the variable and we get a result. When we replace a value that it makes the expression equal to zero, that value is called "solution".
So in this case, we have to find a solution for "m":

Finally, the solution is only one and it is 8.