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Mathematics, 09.09.2020 18:01 alemicsho2397

HELP PLS Add the following and express the answer in simplified form. a) 2x, 9x , and -x b)3xy, 2xy, 4xy, and -7xy c) 6abc, -8abc, 5abc, and -abc\\ d) -2ab, -3ab, 9, 7ab, -4

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