First, turn the second one into a normal fraction:
[tex]1 \times \frac{3}{5} = \frac{8}{5} [/tex]
Then set the denominators equal:
[tex] \frac{1}{4} - \frac{8}{5} = \frac{5}{20} - \frac{32}{20} [/tex]
Solve:
[tex] \frac{5 - 32}{20} = \frac{ - 27}{20} [/tex]
So the answer should be
[tex] \frac{ - 27}{20} [/tex]
