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nhiyewnam
2 năm trước
Bài 2: (3đ) Tính nhanh: a) (-175) + 54 +75 + (-154) b) (-16). (-39) + 61 . 16 c) (-8) . 7 . (-9) . 125 Bài 3: (4đ) Tìm số nguyên x biết : a) -31 – x = -19 b) x : 3 + 7 = -20 c) |𝑥 − 12| − (−4) = 15 d) (x-2) là ước của -3
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