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OpenStudy (mackenzie2013):
The temperature Saturday is -13°, and on Sunday it is -4°. Which equation would be used to show the difference in temperature from Saturday to Sunday? -4 + 13 = -4 - (-13) = -4 - 13 4 + (-13)
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OpenStudy (anonymous):
The second equation is correct. You are looking for a positive difference, so you would subtract the value that is more negative from the less negative value to get a positive answer.
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