

Bài 1: Tìm $x,y,z$ biết
a) $|3x-4|+|3y-5|=0$
b)$|x+\frac{3}{4}|+|y-\frac{1}{5}|+|x+y+z|=0$
c)$(x-1)^{x+2}=(x-1)^{x+6}$
a) $|3x-4|+|3y-5|=0$
b)$|x+\frac{3}{4}|+|y-\frac{1}{5}|+|x+y+z|=0$
c)$(x-1)^{x+2}=(x-1)^{x+6}$
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