MacOS High Sierra: how can I merge 2 partitions into one? Well, I've got a little problem with my SSD.

I had Windows installed through the bootcamp, when macOS offered me a High Sierra update. I've updated. But when I wanted to remove Windows, I could not do it. I had to delete it via the Disk Utility. And then I ran into a problem: I had 2 containers on one internal physical disk.



But how do I unite them now, so that the empty merged with the system without loss of information?

Here is my diskutil list:
Use the commands given below to preform the merge.


  Note: These commands will delete the noname volume, therefore you may want to backup this volume.


diskutil apfs deleteContainer disk0s3
diskutil eraseVolume free n disk0s3
diskutil apfs resizeContainer disk0s2 0


If a command fails, try prepending a sudo.