果园里有桃树和李树共512棵，桃树的棵数是李树的7倍，两种树各有多少棵？(H)r)A1{(h;H6h
算式：提示9h;o/U+C-o/U;x(H)r)A1{(h;H6h
答：桃树有0F8o8z2~6~4P,I7R4T3U4~棵，李树有5b+P7d棵。(H)r)A1{(h;H6h