4/5у2 8/1

It seems like you have written an expression resembling a mathematical equation or perhaps fractions, but it isn't entirely clear what you intend to communicate or ask.

If you are looking to simplify or perform operations with these fractions, could you please clarify your question? For example:

1. Are you looking to add, subtract, multiply, or divide these fractions?
2. Are you trying to set up an equation to solve for a variable?
3. Please provide additional context for the numbers 4/5, y², and 8/1.

Once I have a clearer understanding of what you're asking, I'll be happy to assist you further!