I'm not sure what this problem is asking.
The sum of 4 and the product of 5 and x is equal to 5 less than the product of 2 and x. What is the value of x?
I can see why you're confused....this sentence is poorly constructed
I think it means that
4 + 5x = 2x - 5 rearrange as
5 + 4 = 2x - 5x
9 = -3x
9 / -3 = x = - 3
