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thuyvytinh
2 năm trước
câu 2 : tìm số nguyên x ,biết : a) -13 + x = 39 b) 3x - ( -17) = 14 c) |x| - 10 = -3 d) |x +9 | . 2 =10 e) ( x - 5 ) ( x+6 ) = 0 f) x chia hết 12 ; a chia hết 10 và -200 ≤ x ≤ 200 câu 3 : liệt kê và tính tổng tất cả các số nguyên x, biết : a) -8 < x < 9 b) -4 ≤ x < 4 c) |x| < 6 giúp mình với mình đang cần gấp
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