Here is what have now.
As you see, I'm running out space on /dev/sda6.I'm not sure how to move partitions around to gain space. I surly don't want to mess up.
Here's an immediate answer to solve the problem while you find where you boot from, as requested above.
Firstly, back up your important data.
If you are using Mint 18 or above, the penalty for using a swap file instead of a swap partition is long since solved, so you can eliminate the swap partition and instead create a swap file in sda7 once partitioning is completed. This gets you another 5.6GB right away while I research the possibilities of problems in moving all partitions. You would so this with three commands:
dd if=/dev/zero of=/path/to/swapfile bs=2048 count=2097152
/path/to/ swapfile is the name and location of the swap file, and the count of 2097152 is the size in kilobytes (i.e., 2GB). In Linux, rarely do you need a swap space (be it partition or file) larger than your RAM, and you can monitor your swap space and adjust it much more easily when you have a swap file.
Prepare that swap file with mkswap just as you would a partition, but this time use the swap file name:
Then mount it with the swapon command:
You can also safely take space from sda7 and add it to sda6 after removing the swap partition. I would do it in this order:
A) Remove swap partition (sda5)
B) Shrink sda7
C) Add the space gained to sda6
D) Commit and make changes
E) Shut down, remove LiveUSB, boot from internat drive.