杨林今年5岁,爸爸29岁,几年后,爸爸的年龄是杨林的4倍?(Y'?1g,Z/R+t9v+N7c
算式:提示4R:c5S:|0y*Q6`,J*N+~(Y'?1g,Z/R+t9v+N7c
答:6H9I;k6q5N:M)R年后,爸爸的年龄是杨林的4倍。(Y'?1g,Z/R+t9v+N7c