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Mathematics 15 Online
OpenStudy (anonymous):

3 – 7x + 2x when x = 3 A. –12 B. –30 C. –18 D. –24

OpenStudy (anonymous):

so take 7*3=21 and then take 2*3=6 then all you have to do is add them all up and of course subtract so your answer is D -24

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