Ответ:
\(\overline{6}=\dfrac{2}{3}\), а \(20\cdot0,03=0,6=\dfrac{3}{5}\).
\(\dfrac{2}{3}-\dfrac{3}{5}=\dfrac{10-9}{15}=\dfrac{1}{15}\).
\(1,8:\dfrac{1}{15}=1,8\cdot15=27\).
Ответ: 27.
\(\overline{6}=\dfrac{2}{3}\), а \(20\cdot0,03=0,6=\dfrac{3}{5}\).
\(\dfrac{2}{3}-\dfrac{3}{5}=\dfrac{10-9}{15}=\dfrac{1}{15}\).
\(1,8:\dfrac{1}{15}=1,8\cdot15=27\).
Ответ: 27.