ya ... right answer is
4 b6 k* U2 ~* z) pa)$60-$55=賺左$5公仔箱論壇4 I5 w3 a. M" l9 Q! ~
tvb now,tvbnow,bttvb. {- O/ o0 J. h6 R" o; f b5 U- N5 [
b)$60-$62=花多左$2 ~! ?0 g R l d
# M! b. C8 i% y6 ntvb now,tvbnow,bttvbc)$68-$62=賺左$6
: R) x4 y8 \7 v- Z公仔箱論壇& @$ `" |: s$ [
所以:$5-$2+$6=$9 |