Ответ:
\(\frac4{21}-\frac3{14}=\frac{8-9}{42}=-\frac1{42}\).
\(4\frac15=\frac{21}{5}\), поэтому \(\frac{21}{5}\cdot\left(-\frac1{42}\right)=-\frac1{10}\).
\(\frac35-\frac1{10}-\frac35=-\frac1{10}\).
Ответ: \(-\frac1{10}\).
\(\frac4{21}-\frac3{14}=\frac{8-9}{42}=-\frac1{42}\).
\(4\frac15=\frac{21}{5}\), поэтому \(\frac{21}{5}\cdot\left(-\frac1{42}\right)=-\frac1{10}\).
\(\frac35-\frac1{10}-\frac35=-\frac1{10}\).
Ответ: \(-\frac1{10}\).