李明收集了15种树叶，比方进多5种，两人共收集了多少种树叶？4P+P3I4r.v0J:I3o3Z:K,B
算式：提示3d(c6m)~4_;l6g7T6d,s;Y9M'D;V(y2P.k,?4P+P3I4r.v0J:I3o3Z:K,B
答：两人共收集了'V9G9{1a)J7l*e5e.v种树叶。4P+P3I4r.v0J:I3o3Z:K,B