I opened gparted and as i can see i have 3 partitions(or i think so) first one sda1 (236 mb) its ext2 type file and its booting point, second one is sda2(rest of the hdd 1.36 tb) extended ntfs type file and i have third one that is within the sda2 called sda5 it takes the same space as sda 2 and its file type is crypt luks, so when i try to resize the sda2 i cant resize it not for even 1 mb, i dont know if that crypt luks file is causing the problem, so i dont know what to do, by the way i can format the crypt luks(sda5) file that in inside sda 2 but i dont know if i should.Can anyone help me please? here are the pictures when i open gparted 
when i try to resize sda 2 
i think i did use encryption i mean while it is booting i type password and its says sda5/scrypt set up succefully or something like that and then it goes to my login screen where i type username and pass that is it
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user68186
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1Adding a screenshot may help (you can use http://imgur.com to upload it) - did you choose a method of encryption when installing Ubuntu? – Wilf Jun 05 '14 at 20:27
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possible duplicate of How to Partition Your internal harddrive in Ubuntu 12.04 LTS – user68186 Sep 09 '14 at 14:03
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Also see Rsizing boot partition with full disk encryption. Basically it can't be done without erasing everything. – user68186 Sep 09 '14 at 14:24
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You don't have an NTFS partition. You have an extended partition, with only one logical paritition in it, the LUKS volume. – muru Sep 09 '14 at 15:01