gải phương trình
a, x/3-5x/6-15x/12=x/4-5
b, 8x-3/4-3x-2/2=2x-1/2+x+3/4
c, 3(5x-2)/4-2=7x/3-5(x-7)
d,x=5/2+3-2x/4=x-7+x/6
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