ya ... right answer is 5.39.217.77:8898: o0 P/ x% x1 X- M+ p) N, V
a)$60-$55=賺左$55.39.217.77:8898- b3 _, M! q8 Z
5.39.217.77:8898" j. [( g) f! j* J" Z% m
b)$60-$62=花多左$2% t3 \! V: O# A
5.39.217.77:88980 a1 w4 C$ r( j Y/ _ P8 N
c)$68-$62=賺左$6tvb now,tvbnow,bttvb4 t5 e# R" r6 B7 ?+ Y K% R. [
# h/ i1 _, z7 X+ N) d所以:$5-$2+$6=$9 |