What is 17 x -3?

Unfortunately, the expression "17x-3" by itself doesn't provide much context or information to work with. It is simply a mathematical expression consisting of a combination of the variable "x" and the constants 17 and -3, using the operations of multiplication and subtraction. Without further context about the problem or equation it is being used in, it is difficult to give more specific information about what this expression represents or how it can be used in mathematics or real-world applications.