a number plus four added to the difference between three and twice the number?

Let's try to write this in math language while reading it-

*(a number plus 4)*N+4 (added to) +

*(the difference between three and twice the number)*(3 - 2N)

N + 4 + (3 - 2N)

N + 4 + 3 - 2N

N + 7 - 2N

7 - N

your answer is

**7 - N**unless you were given more information than shown above.