\frac{21}{4}\:\div \left(-7\right)+\left\{-\left(-\frac{14}{3}\right)\cdot \left(-\frac{5}{8}\right)-\left[-\frac{5}{12}:\left(\frac{1}{12}-\frac{2}{9}\right)-3\right]+\frac{1}{2}\right\}\div \left(+29\right)
Mathbot Says...
I wasn't able to parse your question, but the HE.NET team is hard at work making me smarter.