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27-02-2017
Mathematics

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4(2a + 2) - 17 = 15

please help & explain how you got to the answer

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Аноним Аноним

27-02-2017

4(2a + 2) - 17 = 15

8a + 8 - 17 = 15 (Distribute)
8a - 9 = 15 (Simplify)
8a = 24 (Isolate Variable)
a = 3 (Divide each side by 8)

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