Найдите сумму или разность: 5/18-2 23/30.

\[\frac{5}{18} - 2\frac{23}{30} = \frac{5}{18} - \frac{60 + 23}{30} =\]

\[= \frac{5^{\backslash 5}}{18} - \frac{83^{\backslash 3}}{30} = \frac{25}{90} - \frac{249}{90} =\]

\[= \frac{25 - 249}{90} = - \frac{224}{90} =\]

\[= - 2\frac{44}{90} = - 2\frac{22}{45}\]