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The temperature of a freezer started at 18ºC. After cooling for a few hours, the freezer had a temperature of –12ºC. By how many degrees did the temperature change?
Negative 12 minus 18
Negative 12 minus (negative 18)
18 minus 12
18 + (negative 12)
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Answered by
GPT-5 mini
AI
Change = final − initial = (−12) − 18 = −30.
So the temperature changed by 30°C (a decrease of 30°C). The correct expression is "Negative 12 minus 18."
So the temperature changed by 30°C (a decrease of 30°C). The correct expression is "Negative 12 minus 18."
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