The value of \(\frac{3}{{15}} + \frac{{13}}{{14}} - \frac{{19}}{{21}} + \frac{{31}}{{35}} - \frac{{23}}{{30}}\) is:

The value of \(\frac{3}{{15}} + \frac{{13}}{{14}} - \frac{{19}}{{21}}

1.	The value of \(\frac{3}{{15}} + \frac{{13}}{{14}} - \frac{{19}}{{21}} + \frac{{31}}{{35}} - \frac{{23}}{{30}}\) is:
A.	\(\frac{2}{5}\)
B.	\(\frac{1}{3}\)
C.	\(\frac{{12}}{{35}}\)
D.	\(\frac{8}{{21}}\)
Answer» D. \(\frac{8}{{21}}\)