Convert 5°F to the Celsius scale.
°C = 59\dfrac{\text{5}}{\text{9}}95 (F - 32)
= 59\dfrac{\text{5}}{\text{9}}95 (5 - 32)
= 59\dfrac{\text{5}}{\text{9}}95 x (-27)
= - 15
So 5°F = -15°C.