Problema Solution
The difference of a numbed and 4 is 9
Answer provided by our tutors
Let 'x' represent a number. The problem statement is ambiguous, because the "difference of a number" may indicate that 'x' is larger than '4' or that 'x' is smaller than '4'.
x-4=9
x=13
4-x=9
x=-5
...so most likely, a positive number is desired and "x-4=9" is the correct difference.