a+b+c+d=200- m9 h* V% f7 z' d" p) e
4x-8-16-24=200
) w L8 n( Q5 G* y4x-8(1+2+3)=200
4 d% `7 M% Z- V5 B2 k" ~tvb now,tvbnow,bttvb4x-8(6)= 200
' q( l2 t# S* S5.39.217.764x=200+8(6)
, D8 \2 Y, i: \% }/ ]& Z9 ~+ Ax=248/40 F) m6 `% R' b9 H* a" y% F8 f2 a
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