Question

when will the numerical value of fahrenheit thermometer be equal and opposite to value on Celsius scale​

Answer 1

0 degree is your answer ok ok ok ok

Answer 2

Rather than converting one temperature to another (not helpful because it assumes you already know the answer), you set degrees Celsius and degrees Fahrenheit equal to each other using the conversion formula between the two temperature scales:

°F = (°C * 9/5) + 32

°C = (°F - 32) * 5/9

It does not matter which equation you use. Simple use "x" instead of degrees Celsius and Fahrenheit. You can solve this problem by solving for x:

°C = 5/9 * (°F - 32)

x = 5/9 * (x - 32)

x = (5/9)x - 17.778

1x - (5/9)x = -17.778

0.444x = -17.778

x = -40 degrees

the numerical value of fahrenheit thermometer be equal and opposite to value on Celsius scale at -40 degrees