Ответ:

  1. \(\frac{2^9\cdot3^9}{6^7}=\frac{6^9}{6^7}=6^2=36\).
  2. \(\frac{18^7}{2^6\cdot9^6}=\frac{18^7}{(2\cdot9)^6}=18\).
  3. \(\frac{7^9\cdot5^8}{35^8}=\frac{7^9\cdot5^8}{7^8\cdot5^8}=7\).
  4. \(\frac{2^9\cdot5^{14}}{50^7}=\frac{2^9\cdot5^{14}}{2^7\cdot5^{14}}=2^2=4\).
  5. \(\frac{100^8}{25^5\cdot5^{14}}=\frac{2^{16}5^{16}}{5^{10}5^{14}}=\frac{2^{16}}{5^8}=\frac{65536}{390625}\).
  6. \(\frac{45^4}{75^3}=\frac{(3^2\cdot5)^4}{(3\cdot5^2)^3}=\frac{3^5}{5^2}=\frac{243}{25}\).

Ответ: 1) 36; 2) 18; 3) 7; 4) 4; 5) \(\frac{65536}{390625}\); 6) \(\frac{243}{25}\).