ya ... right answer is tvb now,tvbnow,bttvb, a' Y6 [. N! k7 m0 T1 g) X
a)$60-$55=賺左$5
h% l# P: h: t {0 Z5 Atvb now,tvbnow,bttvb
7 W# V( d. D; X m# L3 ]! rb)$60-$62=花多左$2
1 {; g* ]: h: _: v2 v5.39.217.77
3 m2 w; O5 x$ G- V% j9 u7 Jtvb now,tvbnow,bttvbc)$68-$62=賺左$6
& M! d! Y: B0 ^! }9 p2 {公仔箱論壇5.39.217.77. B! i. c" F. `' _6 I
所以:$5-$2+$6=$9 |