Can't delete/merge my partitions on OSX
I would assume the same procedure would be followed as the answer posted to this question 
"Merge Partitions with Disk Utility in El Capitan Gives operation Failed error".

In other words, the commands would be as shown below.

diskutil  erasevolume  "Free Space"  ""  /dev/disk0s7
diskutil  erasevolume  "Free Space"  ""  /dev/disk0s6
diskutil  erasevolume  "Free Space"  ""  /dev/disk0s5
diskutil  erasevolume  "Free Space"  ""  /dev/disk0s4
diskutil  cs  resizestack  F6E64063-7D4B-4D75-AAC5-C4D128919CD3  0



  Note: You need to keep partitions disk0s1, disk0s2 and disk0s3.


I would advise executing the command diskutil list after entering each of the above commands. If something unexpected happens, send me a comment.