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Mathematics 20 Online
OpenStudy (anonymous):

Which of the following statements is not always true? A. a 1 (2b) 5 2b 1 a C. (a 1 b) 1 (2c) 5 a 1 fb 1 (2c)g B. a 2 (2b) 5 (2b) 2 a D. 2(2a) 5 a

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