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noteaza cu a adevarat sau f fals urmatoarele egalitati 17+84=90 54+28=82 38+9=46 7+57=64 52_8=34 65_6=59 83_19=76 91_24=67 37+63=100 100_28=82 56+34=70 100_43=57 80_64=14 30+70=100 31+49=80 100_31=79