n - 8 is the expression for the difference of eight and a number.'Number' is a variable, so the variable must be a letter (in this case, 'n'). 'The difference' is going to be the subtraction symbol that is in between the 'number' and eight, so it must be n - 8.
It could, of course, be 8 - n.
it has to have an x number in it.
x/8
The expression is: b/8
4
|5n - 2n|
2(x - 7) = 8
14
it has to have an x number in it.
difference
I would say the anwser would be 11
Let the number be x and so the expression is 8x
x/8
The expression is: b/8
The expression is: 8+x
3n + 8
4
|5n - 2n|