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33:(r+19)=80:2:5:4:2

Răspuns :

33:(r+19)=80:2:5:4:2
33:(r+19) = 40:5:4:2
33:(r+19) = 8:4:2
33:(r+19) = 2:2
33:(r+19) = 1
r+19 = 33:1
r+19 = 33
r = 33-19
r = 14