[tex]5 \times \frac{3}{4} = \frac{23}{4} [/tex]
[tex]3 \times \frac{1}{4} = \frac{13}{4} [/tex]
[tex] \frac{23}{4} - \frac{13}{4} = \frac{10}{4} = \frac{5}{2} [/tex]
[tex]18 \times \frac{3}{12} = \frac{219}{12} = \frac{73}{4} [/tex]
[tex]12 \times \frac{1}{8} = \frac{97}{8} [/tex]
[tex] \frac{73}{4} - \frac{97}{8} = \frac{194}{8} - \frac{97}{8} = \frac{97}{8} [/tex]