avamcmoran
avamcmoran
01-04-2016
Mathematics
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-9a + 139 = -1a + 59 what is a?
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ImpatientAngel
ImpatientAngel
01-04-2016
-9a + 139 = -1a + 59
-9a + a= 59 - 139
-8a = - 80
a = 10
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