Yes, the value of an expression does mean the answer.
The value of an expression is a variable that is assigned to a number.
Lets say we have 3n + 2 = 10.
"n" is the variable and we need to find the value of it.
In that kind of question, that is the answer for an expression.
But there are cases where we have the value and we need to solve with it. Then, the value would not be the answer.
Best of Luck!