# Chapter 9 - Measurement - 9.3 Measuring Weight and Temperature - Exercise Set 9.3 - Page 603: 50

-35 C

#### Work Step by Step

Here we need to convert a Fahrenheit temperature to its equivalent temperature on the Celsius scale. $C=\frac{5}{9}(F-32)$, where F = Fahrenheit temperature and C = Celsius temperature. F = -31 $C=\frac{5}{9}(F-32) = \frac{5}{9}(-31-32) = \frac{5}{9}(-63) = 5 \times (-7) = -35$ For F = -31, C = -35

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