Oblicz A.-½-0,5*[(-5)-(- 5/18):(3,6)]*[(- 5/14*(-1,4)]=

-\frac{1}{2}-0,5\cdot [(-5)-(-\frac{5}{18}):(3,6)]\cdot [(-\frac{5}{14})\cdot (-1,4)]=-\frac{1}{2}-\frac{1}{2}\cdot [(-5)-(-\frac{5}{18}):(\frac{36}{10})]\cdot [(-\frac{5}{14})\cdot (-\frac{14}{10})]=-\frac{1}{2}-\frac{1}{2}\cdot [(-5)-(-\frac{5}{18})\cdot (\frac{5}{18})]\cdot \frac{1}{2}=-\frac{1}{2}-\frac{1}{2}\cdot [(-5)-(-\frac{25}{324})]\cdot \frac{1}{2}=-\frac{1}{2}-\frac{1}{2}\cdot (-4\frac{299}{324})]\cdot \frac{1}{2}=-\frac{1}{2}+\frac{1595}{648}\cdot \frac{1}{2}=-\frac{1}{2}+\frac{1595}{1296}=-\frac{648}{1296}+\frac{1595}{1296}=\frac{947}{1296}