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What Is a PPTX File (and How Do I Open One)? - How-To Geek
Create and open a PowerPoint presentation - Microsoft Support
Free Online Slide Presentation: PowerPoint | Microsoft 365
PPTX File (What It Is and How to Open One) - Lifewire
What is a PPTX file and How to Open It? A Complete Guide!
PPTX File - What is a .pptx file and how do I open it? - FileInfo.com
How to view and open .PPTX Files | Adobe
File formats that are supported in PowerPoint - Microsoft Support
Create a presentation in PowerPoint - Microsoft Support
PPTX to PPT | CloudConvert