01-10-2020
Mathematics

contestada

A student evaluated −4 + (−9 12) and got an answer of 5 1/2. What might the student have done wrong?

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HowardAlien HowardAlien

01-10-2020

Answer:

The student added +4 instead of -4 so instead of getting -13 1/2 they got 5 1/2 somehow since even if they did that it should be -5 1/2.

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