jbeth7824 jbeth7824

18-04-2019
Mathematics

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3(2x + 4y - 2z) + 7(x + y - 4z) A) 13x + 5y - 22z B) -x - 19y + 22z C) 13x + 19y - 34z D) -x - 5y + 34z 6)

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norikochan norikochan

18-04-2019

The answer is C. Because 3•2x=6x, 7•x=7x which added together = 13x and same way for the rest!

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