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Solve the inequality. |x + 6| > 15 A. –9 < x < 9 B. x > –21 or x < 9 C. x < –21 or x > 9 D. –21 < x < 9
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-15<x+6<15 add -6 in all of them -21<x<9 so D
Thanks! i always have trouble with these. i' really bad at math.
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