ya ... right answer is
5 S4 K& P: r3 o/ Qtvb now,tvbnow,bttvba)$60-$55=賺左$5公仔箱論壇: |# M5 B2 j) y2 z( \4 t' R
tvb now,tvbnow,bttvb# r' p; w- l" E$ \# {
b)$60-$62=花多左$2tvb now,tvbnow,bttvb; r& p( m- a1 }% v5 r
5.39.217.77+ p5 o) e4 p" k- }9 B
c)$68-$62=賺左$6
, {; G. p7 x" F r& K! [( _2 T! `tvb now,tvbnow,bttvb
! f' H: |' P, m- y6 j7 [0 E所以:$5-$2+$6=$9 |