Răspuns :
8000 + 8000 : 10 + x = 17287
x = 17287 - 8800
x = 8487
x = A treia luna
x = 17287 - 8800
x = 8487
x = A treia luna
17287-8000=9287 8000:10=800 17287-8000-800=8487 bilete vandute in a teia luna