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**teacast** Hi all,

Well I went to my teacher to get help, but his method just did not work (no idea why). I'm trying to solve this:

For all n in N (where N is the set of natural numbers)$\displaystyle , 1/2(5) + 1/5(8) + ... + 1/(3n-1)(3n+2) = n/6n+4$

I understand the steps to PMI, but when I get to the Inductive Step $\displaystyle P(k+1)$ and try to solve the equality I get completely stuck.

I don't know what I am doing wrong, whether it be the PMI steps or otherwise. Thanks guys.