Assuming "3 and 1/3" to be a mixed number (yes, they're hard to write in this format), and assuming the fractional expression to be (x - 3y)/(2x - 5y), what have you tried? How far have you gotten? Where are you stuck?
You've been given worked solutions for quite a few "ratio" exercises so far. Please reply showing full details of how you have worked from what you have been given.
Thank you.
Eliz.