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Mathematics, 23.08.2020 02:01 kelyanthecrafte
Sebastian was in a hotel lobby and took the elevator up 7 floors to his room. Then he took the elevator down 9 floors to the parking garage. He described his movement with the expression 9+ (-7). What is Sebastian's error?
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Sebastian was in a hotel lobby and took the elevator up 7 floors to his room. Then he took the eleva...
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