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Thời gian	Nội dung	Điểm cảm ơn
20/07/2022 20:49:22	a)15-(18-20) = 15 - (-2) = 15 + 2 = ...	5
20/07/2022 20:46:09	2(x+3)-x^2-3x=0<=> 2(x+3) - x(x+3) ...
20/07/2022 20:44:23	a) mẫu số chung: 84b) mẫu số chung: 36c) ...	5
20/07/2022 20:43:02	tổng số phần bằng nhau là3 + 5 = 8 ...
20/07/2022 20:41:13	books was being read by me at 7 ...
20/07/2022 20:39:42	I was taught english by nina last yearmy ...
20/07/2022 20:37:50	our teeth shoule be cleaned twice a ...
20/07/2022 20:36:01	why wasn't he helped by them?how many ...
20/07/2022 20:34:19	a new computer will be bought by janethe ...
20/07/2022 20:33:09	the door is opened by hima picture is ...	5
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