Given that p is a positive number, n is a negative number, and ∣p∣>∣n∣,
which of the following expressions has the greatest value?
We can substitute values, such as p=2 and n=−1. The second choice will result in the largest value.
To maximize the value of a fraction, we want the numerator to be as large as possible and the denominator as small as possible.
Among the choices for the numerator p−n vs p+n, p−n will result in the greater value since p is positive and n is negative.
To minimize the denominator, among the choices, n is the smallest.