Answer:
[tex]\frac{9}{40}[/tex]
Step-by-step explanation:
17/20 and 5/8
[tex] = \frac{17}{20} - \frac{5}{8} [/tex]
Find LCM = 40
[tex] = \frac{34 - 25}{40} [/tex]
[tex] = \frac{9}{40} [/tex]