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Mathematics 20 Online
OpenStudy (anonymous):

Mark walks 11 minutes east to his friend’s house. Then he and his friend walk 3 minutes west to the bus stop. Using compass directions on a number line, which expression can be used to find how many minutes Mark’s house is from the bus stop? 11 + -3 -3 + -11 11 + 3 -3 - 11

OpenStudy (austinl):

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