Yes, setting F = C = x gives x = (9/5)x + 32. Subtracting yields −(4/5)x = 32, so x = −32 × (5/4) = −40. Both scales are equal at −40°.
Class 9 Maths (Ganita Manjari part two) Chapter 13 questions answer
Class 9 Maths (Ganita Manjari part two) Two Variables, One Line Question Answer
Yes, such a temperature exists. Setting F = C = x in the conversion formula gives x = (9/5)x + 32. Rearranging the terms gives x − (9/5)x = 32, which simplifies to −(4/5)x = 32. Multiplying both sides by −5/4 results in x = −40. Therefore, −40°C is numerically equal to −40°F.
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