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lanthuongkiem
2 năm trước
Giải & biện luận HPT: a) $\left \{ {{x + my = 3m} \atop {mx + y = 2m + 1}} \right.$ b) $\left \{ {{(m + 1)x + my = 2} \atop {2mx + y = m + 1}} \right.$
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