Step-by-step explanation:
[tex] = 1 \frac{1}{2} - 1 \frac{1}{4} \\ [/tex]
[tex] = \frac{1 \times 2 + 1}{2} - \frac{1 \times 4 + 1}{4} \\ [/tex]
[tex] = \frac{3}{2} - \frac{5}{4} \\ [/tex]
[tex] = \frac{3}{2} \times \frac{2}{2} - \frac{5}{4} \times \frac{1}{1} \\ [/tex]
[tex] = \frac{6 - 5}{4} \\ [/tex]
[tex] = \frac{1}{4} \\ [/tex]
