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posted by Peter Wednesday, July 13, 2011 at 8:24pm.
If A + B = 12, and B + C = 16, What is the value of A + C? A. -4 B. -28 C. 4 D. 28 E. The answer cannot be determined from the given information.
a + b = 12 b + c = 16 a - c = -4 I can not find a+c
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