Static Page with last 3 articels from all categories

Hallo,

I have a problem which is important for me to solve and hope someone can help.

I have a Blog running, where I want to change my start page.

At the moment it is showing my last Artikels.

for some reasons I have to change it to a static page - easy so far.
But I need the last 3 articles from all categories listed under the text like in my attached pic.

Can anybody explain dummy proved how to do that?

Thanks in advance