PokerStars Zoom No-Limit Hold'em, $0.05 BB (9 handed) - PokerStars Converter Tool from http://www.flopturnriver.com/

Button ($3.96)
SB ($4.51)
Hero (BB) ($3.22)
UTG ($6.87)
UTG+1 ($8.40)
MP1 ($5.20)
MP2 ($4.52)
MP3 ($6.61)
CO ($5.72)

Preflop: Hero is BB with A, K
1 fold, UTG+1 calls $0.05, MP1 raises to $0.20, 5 folds, Hero calls $0.15, UTG+1 calls $0.15

Flop: ($0.62) 7, Q, A (3 players)
Hero checks, UTG+1 checks, MP1 bets $0.35, Hero calls $0.35, 1 fold

Turn: ($1.32) 2 (2 players)
Hero checks, MP1 bets $0.75, Hero calls $0.75

River: ($2.82) 3 (2 players)
Hero checks, MP1 bets $2.70, Hero calls $1.92 (All-In)

Total pot: $6.66 | Rake: $0.28

Given the hand, I'm putting my opponent on AJ, AQ, AK, AA, QQ 77 when I have to close the action on the river. I can not think of any other hand given the action.

I had to call 1,92$ into a 6,66$ total pot (already substracting rake). This means the equity I should have to be profitbale is 1,92/6,66=28,8%.
I used the program EV++ Slice to run the equity simlulation and gave me a 40,7% equity, so the call is profitable in the long run. I was actually thinking this same thing while I played the hand, but of course, I didn't knew my exact equity against the range I gave him, but I knew my minimum equity I needed should be at least somewhere between 25-30% while I was thinking to call or not, based on quick calculations I made.

By the way, is there anything anybody would have done differently? I was playing zoom full ring NL5. I think villian was not a regular but I can't be 100% sure, He was playing only in 1 table for what I searched.