Good evening everyone , I got a little issue with Swap Partitions. Due to some issues after installing Ubuntu first time, I reinstalled it and now I have 3 Swaps. Here is sudo fdisk -l result

Disk /dev/sda: 750.2 GB, 750156374016 bytes
255 heads, 63 sectors/track, 91201 cylinders, total 1465149168 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk identifier: 0xaa9693fe

   Device Boot      Start         End      Blocks   Id  System
/dev/sda1            2048    52430847    26214400   1c  Hidden W95 FAT32 (LBA)
/dev/sda2   *    52430848   540677076   244123114+   7  HPFS/NTFS/exFAT
/dev/sda3       540678142  1465147391   462234625    5  Extended
Partition 3 does not start on physical sector boundary.
/dev/sda5      1452750848  1465147391     6198272   82  Linux swap / Solaris
/dev/sda6      1440352256  1452742655     6195200   82  Linux swap / Solaris
/dev/sda7       540678144  1427951615   443636736   83  Linux
/dev/sda8      1427953664  1440339967     6193152   82  Linux swap / Solaris

So Swaps in /dev/sda5 and /dev/sda6 are no longer in use as far as I understand and thus I was planning to delete them, however faced a problem. What I did is download and burn Gparted Live CD and boot it up, tried to delete those partitions but I have no idea how to add 12GB unallocated memory to the existing OS partition in this case to /dev/sda7 Is there anyway I can delete 2 swaps and extend unallocated memory to /dev/sda7 partion?

Thank you in advance!