X/2 -15= -7 in verbal expression

11

Step-by-step explanation:

In this problem we have the following expression

Note that it depends on two variables a and b

Evaluating the expression for a = 2 and b = 3 means that you must replace the variable "a" with the number 2, and you must replace the variable "b" with the number 3

So we have that:

Finally the answer is 11