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01-09-2019
Mathematics

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The temperature on a Christmas morning was -7 degrees celsius. Three hours later the temperature dropped 5 degrees. Then by noon, the temperature rose 9 degrees, but by night fall it dropped again 12 degrees. What was the temperature by night fall?

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01-09-2019

Answer:

-15 degrees celsius

Step-by-step explanation:

-7 - 5 + 9 - 12 = - 12 - 3 = -15

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