Deleting Rows Where Cells In Multiple Columns Are Blank

I work with a spreadsheet every week to input values and subtotal them. These values change constantly and instead of going through and manually deleting each row in a 100+ row spreadsheet to be able to import into another program, I'm looking for an quicker way to keep my data in order but consolidate by getting rid of only the rows where both column A and B are blank.

Here's an example of what I'm working with:

5
10
15
20
50
2
4
6
8
20

This is what I need the final product to look like:

5
10
15
20
50
2
4
6
8
20

So I would like to quickly delete rows 2, 5, and 11. All of the other answers I've found only show how to delete rows based on empty cells in only 1 column. How can I quickly delete the rows where both columns are empty?