Four minus the product of one and a number x

4-1x is the answer, I hope this helps and have good day:)

4-(1*X)

Reason/Explanation:
Four minus the product of one and a number. We take four and we are subtracting the product of 1 and a number from it. Product means to multiply, and we can use X for the missing number. So 1*X is 1 times X. The product. 4-(1*x).

-DustinBR