On the Internet, we often download various files or receive information by mail, and when we see an xlsx format document , we don’t know how to open it. First, let's try to figure out what this file is. Xlsx is a spreadsheet-based document format that was created in Excel 2007.
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Now, if you come across an xlsx file, you already know how to open it. But still, try to update the software on your computer, as working with the new Office has become even easier and more enjoyable.