\(\overline{abc5}\) - \(\overline{5abc}\) = 3519
\(\overline{abc}\) x 10 + 5 - 5000 - \(\overline{abc}\) = 3519
\(\overline{abc}\) x (10 - 1) + 5 = 3519 + 5000
\(\overline{abc}\) x 9 + 5 = 8519
\(\overline{abc}\) x 9 = 8519 - 5
\(\overline{abc}\) x 9 = 8514
\(\overline{abc}\) = 8514 : 9
\(\overline{abc}\) = 946
Đáp số: \(\overline{abc}\) = 946