Given that <span>e and f are real numbers where e > 0 and f < 0. Since e > 0, this means that e is positive and -e is negative. Also, since f < 0, this means that f is negative.
The sum of two negative numbers gives a negative number.
Therefore, -e + f is negative.
</span> <span>Part B:
Given that <span>e and f are real numbers where e > 0 and f < 0. Since e > 0, this means that e is positive. Also, since f < 0, this means that f is negative and -f is positive.
Recall that e - f = e + (-f) The sum of two positive numbers gives a positive number.
Therefore, e - f is positive.
</span></span> <span>Part C:
Given that <span>e and f are real numbers where e > 0 and f < 0. Since e > 0, this means that e is positive and -e is negative. Also, since f < 0, this means that f is negative.
Recall that f - e = f + (-e) The sum of two negative numbers gives a negative number.
