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tinhiu619
2 năm trước
bài 1 : tìm số nguyên x biết c) - 225/ 105 = 3x/14 d) x - 1/4 = - 5/2 e) 20/2-x = 4/3 h) x + 2/5 =45/x + 2 i) x / 3 = x + 13 / 4 k) 14 / x - 3 = 13/ x + 1 bài 2:tìm số nguyên n, để các biểu thức sau là số nguyên a) n +3 / n -2 b) 2n - 5/ n + 4 c) 3n + 14 / 2n + 5
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