Tìm x biết a) 2/3x+1/2=1/3-3/5 b)3/2+-1/3-4/5=1/3+x c) 4/5x+1/5=-3/4+1/6 d) (1/3+-2/5)x=1/4-2/5+1/3 e) -1/4-2/7+4/5=1/4-x f),1/6-1/2-3/4+x=-1/4-1/3 g) 6/5-5/6+3/2=2/5+4/3+1/2.x
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