3 1 4+ 28

It looks like you have two expressions that can be simplified or calculated.

1. For the first one, "3 1", it could represent a few things depending on the context. If you're looking at it as a fraction, it might be 3 divided by 1, which equals 3.

2. For the second expression, "4 + 28", you simply add the two numbers together:

   \( 4 + 28 = 32 \).

So, if you need further clarification or additional assistance, feel free to provide more context!