penyelesaian dari p/2 + q/4 = 7/4 dan p/4 + q/3 = 9/4

[tex] \frac{p}{2} + \frac{q}{4} = \frac{7}{4} - - - > \times 4 \\ 2p + q = 7 \: \: \:( i) \\ \frac{p}{4} + \frac{q}{3} = \frac{9}{4} - - - > \times 12 \\ 3p + 4q = 27 \: \: \: (ii) \\ eliminasi \\ 2p + q = 7 | \times 4|8p + 4q = 28\\ 3p + 4q = 27 | \times 1| 3p + 4q = 27 \: \: - \\ \: \: \: \: \: 5q = 1 \\ \: \: \: \: \: q = \frac{1}{5} \\ 2p + q = 7 \\ 2p + \frac{1}{5} = 7 \\ 2p = \frac{35 - 1}{5} \\ 2p = \frac{34}{5} \\ p = \frac{34}{10} = \frac{17}{5} [/tex]