This one was short and sweet... an example of how open-ended the puzzles sometimes are. That doesn't mean it was actually quick to solve, however.
The numbers are telephone area codes.
The states can also be represented by their two-letter postal codes.
Substituting the postal codes for the area codes gives:
414 + 701 = 717 + 402 WI + ND = PA + NEso WIND and PANE are a solution pair.