Ответ:
\(\frac{1}{35}-\frac{1}{60}=\frac{12}{420}-\frac{7}{420}=\frac{5}{420}=\frac{1}{84}\).
\(\frac{1}{\frac{1}{84}}=84\).
Ответ: \(84\).
\(\frac{1}{35}-\frac{1}{60}=\frac{12}{420}-\frac{7}{420}=\frac{5}{420}=\frac{1}{84}\).
\(\frac{1}{\frac{1}{84}}=84\).
Ответ: \(84\).