Ответ:
а) \(135=3^3\cdot5\), \(180=2^2\cdot3^2\cdot5\).
\(\frac{135}{180}=\frac{3^3\cdot5}{2^2\cdot3^2\cdot5}=\frac{3}{4}\).
б) \(198=2\cdot3^2\cdot11\), \(126=2\cdot3^2\cdot7\).
\(\frac{198}{126}=\frac{2\cdot3^2\cdot11}{2\cdot3^2\cdot7}=\frac{11}{7}\).
в) \(156=2^2\cdot3\cdot13\), \(195=3\cdot5\cdot13\).
\(\frac{156}{195}=\frac{2^2\cdot3\cdot13}{3\cdot5\cdot13}=\frac{4}{5}\).
г) \(1105=5\cdot13\cdot17\), \(1326=2\cdot3\cdot13\cdot17\).
\(\frac{1105}{1326}=\frac{5\cdot13\cdot17}{2\cdot3\cdot13\cdot17}=\frac{5}{6}\).
д) \(969=3\cdot17\cdot19\), \(1235=5\cdot13\cdot19\).
\(\frac{969}{1235}=\frac{3\cdot17\cdot19}{5\cdot13\cdot19}=\frac{51}{65}\).
Ответ: а) \(\frac{3}{4}\); б) \(\frac{11}{7}\); в) \(\frac{4}{5}\); г) \(\frac{5}{6}\); д) \(\frac{51}{65}\).
