班里选三好学生，共有69名同学参加投票，东东得了30票，小强得了21票，壮壮得了多少票？东东比壮壮多几票？'o4J1R1[0F)v:f(K,m
算式：提示:D5h4x5e0r*s-Y*L'o4J1R1[0F)v:f(K,m
答：壮壮得了8G2_*q0\8j6D*v'|3u8l;F8G)Z)~票。'o4J1R1[0F)v:f(K,m
算式：提示6v*^/K3`0z.G5p*s9A3v5K(V'o4J1R1[0F)v:f(K,m
答：东东比壮壮多-L8A7[票。'o4J1R1[0F)v:f(K,m