The sum of a number x and 84
Chat with our AI personalities
Suppose q is a rational number. Then if q >= 0 then abs(q) = q.If q < 0 then abs(q) = -q [which is positive].
n-8
8-n
If the number is x, then abs(8-x) or |8-x|
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.