What celsius temperature is the same when converted to fahrenheit?

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Answer 1 · 2014-01-14T20:30:10

Quick Answer: -40 °C = -40 °F

PROOF

F = #9/5#C + 32

If F = C, then

C = #9/5#C + 32

#9/5#C – C = -32

#4/5#C = -32

C = -32 × #5/4# = -40

Therefore, -40 °C = -40 °F