[tex](\frac{1}{2} + \frac{2}{4} ) * 12 + 4 = (\frac{2}{4} + \frac{2}{4}) * 12 + 4 = 1 * 12 + 4 = 12 + 4 = 16[/tex]
1 * 12 + 4 = 12 + 4 = 16
