a * b is defined as “half the average of a and b”, determine the positive
difference between: (3 * 5) * 6 and 3 * (5 * 6). Express answer as a fraction in
a * b is defined as “half the average of a and b”, determine the positive
difference between: (3 * 5) * 6 and 3 * (5 * 6). Express answer as a fraction in