Soal pecahan 2

Berikut soal matematika operasi hitung pecahan:
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1. $\large 2\,\frac{1}{4} : \frac{6}{10} × \frac{8}{9} =$ ?
2. $\large \frac{3}{7}\,×\,4\,\frac{2}{3} =$ ?
3. $\large \frac{4}{7}\,×\,2\,\frac{1}{2}:0,25=$ ?
4. $\large 2\,\frac{3}{5} : \frac{1}{2}\,×15%:0,8 =$ ?
5. $\large 18%×\frac{5}{6}:\frac{3}{12} =$ ?
6. $\large 72 \,–\, \frac{2}{3} ×72\,–\,\frac{1}{4}×72$ ?
7. $\large 1\,\frac{1}{9}×6\,\frac{2}{5}:5\,\frac{1}{3} =$ ?
8. $\large 4:\frac{3}{4}×\frac{1}{2} =$ ?
9. $\large 2,25 × \frac{8}{15}:1\,\frac{1}{3} =$ ?
10. $\large 5\,\frac{1}{4}×\frac{3}{4}:\frac{1}{2} =$ ?
11. $\large 2\,\frac{1}{4}:\frac{3}{4}×20% =$ ?
12. $\large 5\,\frac{2}{5}×\frac{4}{9}:1,5 =$ ?
13. $\large 2\,\frac{1}{2}×\frac{7}{8}:0,250 =$?
14. $\large 3,2 : ( \, 0,8 : \frac{15}{20}\,) × 1 \,\frac{3}{4} =$ ?
15. $\large 2\,\frac{1}{4} : ( 0,6 * \frac{2}{5} ) =$ ?
16. $\large 2,25 * 1 \,\frac{2}{3} : ( 1 \,\frac{1}{3} : 1\,\frac{3}{5})  =$ ?
17. $\large 35% : 0,2 × 2\,\frac{2}{7} =$ ?
18. $\large 60%: 0,3 × 2\,\frac{1}{2} =$ ?
19. $\large 2\,\frac{2}{3} × 75%:0,5 =$ ?
20. $\large \frac{3}{8}  : 75% × 1 \,\frac{2}{5} =$ ?
21. $\large 40% : \frac{4}{5} × 1,2 =$ ?
22. $\large 1 \frac{2}{3} × \frac{3}{5} : 15% =$ ?
23. $\large 34% : 1 \,\frac{9}{25} × \frac{8}{10} =$ ?
24. $\large 1\,\frac{3}{4} × 75% : 0,875 =$ ?
25. $\large a = \frac{3}{5} × \frac{5}{6}$. b = $\ \frac{5}{12} : 1 \frac{3}{4}$. Nilai a×b =n?