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22-09-2016
Mathematics

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Which equation is an identity?
7 - (9x + 3) = -9x - 4
6m - 5 = 7m + 5 - m
10p + 6 - p = 12p - 3(p - 2)
3y + 2 = 3y - 2

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nobillionaireNobley nobillionaireNobley

23-09-2016

10p + 6 - p = 12p - 3(p - 2)
9p + 6 = 12p - 3p + 6
9p + 6 = 9p + 6 is an identity.

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