Simplify: 3 * (5 - 1/2 - 1/4)

Here are the solutions to the problems:

1. a) i. Simplify: $\frac{6}{3} \left(5 - \frac{1}{2} - \frac{1}{4}\right)$

Step 1: Simplify the fraction outside the parenthesis.

$$\frac{6}{3} = 2$$

Step 2: Find a common denominator for the terms inside the parenthesis. The common denominator for 1 (from $5 = \frac{5}{1}$), 2, and 4 is 4.

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