Where do you put the variable “n” replacing the unknown number in 8 less than twice a number

Question

I tried my best to figure out this answer, but still couldn’t find the right answer.

Answer 1

Not entirely sure what's being asked, but this might help. If you are solving for a number x that is 8 less than twice some other number n, then this is the situation you've got:

x = 2n - 8

Answer 2

If n is the unknown number, then you would write: 2n -8