Ответ:
\(2.6 : \left(1 - \frac{1}{14}\right)=\frac{13}{5}:\frac{13}{14}=\frac{13}{5}\cdot\frac{14}{13}=\frac{14}{5}=2.8\).
\(1.3 : \left(1 + \frac{1}{12}\right)=\frac{13}{10}:\frac{13}{12}=\frac{13}{10}\cdot\frac{12}{13}=\frac{6}{5}=1.2\).
\(1.2 : \left(1 - \frac{1}{3}\right)=\frac{6}{5}:\frac{2}{3}=\frac{6}{5}\cdot\frac{3}{2}=\frac{9}{5}=1.8\).
\(0.6 : \left(1 + \frac{1}{2}\right)=\frac{3}{5}:\frac{3}{2}=\frac{3}{5}\cdot\frac{2}{3}=\frac{2}{5}=0.4\).
\(0.8 : \left(1 - \frac{1}{9}\right)=\frac{4}{5}:\frac{8}{9}=\frac{4}{5}\cdot\frac{9}{8}=\frac{9}{10}=0.9\).
Ответ: 2) 2,8; 3) 1,2; 4) 1,8; 5) 0,4; 6) 0,9.
