Ответ:
а) \(\frac{7}{10}\times 1\frac{1}{2}=\frac{7}{10}\times\frac{3}{2}=\frac{21}{20}=1\frac{1}{20}\).
б) \(\frac{6}{20}-\frac{12}{100}=\frac{30}{100}-\frac{12}{100}=\frac{18}{100}=\frac{9}{50}\).
Ответ: а) \(1\frac{1}{20}\); б) \(\frac{9}{50}\).
а) \(\frac{7}{10}\times 1\frac{1}{2}=\frac{7}{10}\times\frac{3}{2}=\frac{21}{20}=1\frac{1}{20}\).
б) \(\frac{6}{20}-\frac{12}{100}=\frac{30}{100}-\frac{12}{100}=\frac{18}{100}=\frac{9}{50}\).
Ответ: а) \(1\frac{1}{20}\); б) \(\frac{9}{50}\).