[tex](3 \frac{1}{4} - m) \times 2 = 5 \\ 3 \frac{1}{4} - m = 5 \div 2 \\ 3 \frac{1}{4} - m = 2 \frac{1}{2} \\ m = 3 \frac{1}{4} - 2 \frac{1}{2} \\ m = 3 \frac{1}{4} - 2 \frac{2}{4} \\ m = 2 \frac{5}{4} - 2 \frac{2}{4} \\ m = \frac{3}{4} \\ m = 0.75[/tex]