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posted by jane on Sunday, October 2, 2011 at 6:19pm.

2(a-4)+15=13 Please show step by step

2(a-4)=-2 a-4=-1 a=3

2(a-4)+15=13 2a - 8 + 15 = 13 2a + 7 = 13 2a + 7 - 7 = 13 - 7 2a = 6 a = 6/2 a = 3

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