Nguyen Huu Ai Linh
21/12/2017 at 10:29-
Trần Quỳnh Anh 26/12/2017 at 16:26
78 > x > 56
so x \(\in\)\(\left\{57;58;59;60;61;62;63;64;65;66;67;68;69;70;71;72;73;74;75;76;77\right\}\)
because 77 > ... >57
so the x's bigger valte is 77
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Vũ Mạnh Hùng 23/12/2017 at 11:04
x is biggest is: 77