Toán Lớp 9: $\frac{√x-2011-1}{x-2011}$ + $\frac{√y-2012-1}{y-2012}$ + $\frac{√z-2013-1}{z-2013}$ = $\frac{3}{4}$
Tìm x,y,z
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Toán Lớp 9: $\frac{√x-2011-1}{x-2011}$ + $\frac{√y-2012-1}{y-2012}$ + $\frac{√z-2013-1}{z-2013}$ = $\frac{3}{4}$
Tìm x,y,z
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