a+b+c+d=200
$ R0 H0 J7 n1 N, Z5 ^! R2 B8 t公仔箱論壇4x-8-16-24=200
# E" L0 P$ W4 @) m4 V* O. Y4x-8(1+2+3)=2005.39.217.76% |" H6 ^9 J4 P8 ^( ]; r* s. e
4x-8(6)= 200
6 o* o4 X- X- N% ]% N' |- v) S0 ?tvb now,tvbnow,bttvb4x=200+8(6). \$ O' q8 M+ D2 n$ H; M* N
x=248/45.39.217.76* g2 G" h; _ x& T. q; `0 v+ v6 B6 ^
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