∵2009x-1=0,∴4018x=2,将4018x=2代神大仔入4018x-(3a-2)/5 =0,仿尘得:2-(3a-2)/5=0,解游汪得:a=4.
28/3
x=1/2009 4018*1/2009-3a/7+2=0所以a=28/3