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OpenStudy (anonymous):
Find the additive inverse of -9 on the 12-hour clock.
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OpenStudy (anonymous):
-9?
OpenStudy (anonymous):
+9
OpenStudy (anonymous):
-9=3 on the 12 hour clock the inverse is that gives the identity function (0 for addition) 9+3=12=0
OpenStudy (anonymous):
0
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