Medium
Consider the sum −25−27−29−211-\frac{2}{5}-\frac{2}{7}-\frac{2}{9}-\frac{2}{11}−52−72−92−112. Which expression is equal to the above sum?
∑j=14(−22j+3)\sum_{j=1}^4(-\frac{2}{2 j+3})∑j=14(−2j+32)
∑j=14(−24+j)\sum_{j=1}^4(-\frac{2}{4+j})∑j=14(−4+j2)
∑j=14(22+3j)\sum_{j=1}^4(\frac{2}{2+3j})∑j=14(2+3j2)
None of the above
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