Для того, чтобы определить, какие из перечисленных дробей меньше, чем \(\frac{39}{51}\), нужно сравнить каждую дробь с \(\frac{39}{51}\).
\(\frac{39}{51}\) ≈ 0.7647
- \(\frac{44}{51}\) ≈ 0.8627. \(\frac{44}{51} > \frac{39}{51}\)
- \(\frac{39}{54}\) ≈ 0.7222. \(\frac{39}{54} < \frac{39}{51}\)
- \(\frac{39}{48}\) ≈ 0.8125. \(\frac{39}{48} > \frac{39}{51}\)
- \(\frac{29}{51}\) ≈ 0.5686. \(\frac{29}{51} < \frac{39}{51}\)
- \(\frac{7}{51}\) ≈ 0.1373. \(\frac{7}{51} < \frac{39}{51}\)
- \(\frac{15}{51}\) ≈ 0.2941. \(\frac{15}{51} < \frac{39}{51}\)
- \(\frac{42}{51}\) ≈ 0.8235. \(\frac{42}{51} > \frac{39}{51}\)
Таким образом, дроби \(\frac{39}{54}\), \(\frac{29}{51}\), \(\frac{7}{51}\) и \(\frac{15}{51}\) меньше, чем \(\frac{39}{51}\).
Ответ: \(\frac{39}{54}\), \(\frac{29}{51}\), \(\frac{7}{51}\), \(\frac{15}{51}\)