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-9a + 139 = -1a + 59 what is a?

-9a + 139 = -1a + 59 what is a?
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-9a + 139 = -1a + 59 what is a?

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User PresleyDias
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-9a + 139 = -1a + 59

-9a + a= 59 - 139

-8a = - 80

a = 10
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User Pacuna
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