xlsx, xls - How to open?
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An xls file is a spreadsheet files that can be opened with Micrisoft Excel program.
But progress does not stand still, all new versions of this package are released. After the 2007 release, this program has undergone significant changes both in the interface and in the technology of file creation. It is worth saying that files of new versions of this program have a smaller size (as well as files of new versions of Microsoft Word - docx).
How do I open an xlsx file?
An xlsx file is essentially the same xlsx file, but created by a newer version of the program (starting with the 2007 release). Based on this, to open a file with the .xlsx extension, you will need Microsoft Excel 2007 or later releases.
