Swap RAM early 2011 13' to late 2011 15'?

in july 2011 bought 2011-i7 13 inch macbook pro directly apple 8 (2x4) gigs of ram. acquired late 2011-i7 macbook pro 15' 4 gigabytes of ram (2x2). want give 13 inch macbook pro friend, want 15 inch macbook pro have 8 gigs of ram. possible swap ram in these 2 machines? move 8 gigs 13 inch 2011 15 inch late 2011, , move 4 gigs of ram 15 inch late 2011 13 inch 2011?

 

yes.

upgrading ram in macbooks , macbook pros​

 

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