Question

tim says -40°f is equal to -40°c. explain why this is true.

Answer 1

Let C = degrees Celsius and F = degrees Fahrenheit $C = (F - 32) \times \frac{5}{9}$ $= (-40 - 32) \times \frac{5}{9}$ $= (-72) \times \frac{5}{9}$ $= -\frac{360}{9}$ $= -40$

Answer 2

$^{\circ}C=(^{\circ}F-32)\cdot\dfrac{5}{9}\\\\ ^{\circ}C=(-40-32)\cdot\dfrac{5}{9}\\ ^{\circ}C=-72\cdot\dfrac{5}{9}\\ ^{\circ}C=-8\cdot5\\ ^{\circ}C=-40$