Checkpoint 3 clue

Chilly Today, Hot Tamale! Checkpoint 3 is on Royal. To find out the address, imagine you live in a little house in Montana near the Canadian border. Because of your proximity to the border, you get the weather and daily temperature in Celsius and Fahrenheit. You wonder at what temperature, if any, the temperature would be the same in both Celsius and Fahrenheit. Substitute that temperature, if it exists, for A in the equation below. If no such number exists, use zero.

A + 749

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