车上原来有50人,到某站后下车18人,又上来10人,4a's;N7P-V.W6w9r/a;m4P-s
车上现有多少人?4a's;N7P-V.W6w9r/a;m4P-s
算式:提示(d1R*e3@2S3y4e5G;`1U*g4a's;N7P-V.W6w9r/a;m4P-s
答;车上现有3c7o/z0E/\/Y2o)h,P人。4a's;N7P-V.W6w9r/a;m4P-s