[tex] \frac{3}{8} \times \frac{4}{1} = \frac{12}{8} \\ \frac{12}{8} \times \frac{1}{2} = \frac{12}{16} \\ \frac{12}{16} = \frac{3}{4} [/tex]
3 * 4 is 12. 8 * 1 is 8. 12 * 1 is 12. 8 * 2 is 16. 12/16 equals 3/4 if you divide the top and bottom both by 4
