有两筐西瓜，甲筐有7个西瓜，如果从甲筐拿出2个放入乙筐，那么两筐西瓜一样多，乙筐原有多少个西瓜？*j4a.N0Q3T-~2{'g4[+n.l-A-p
算式：提示+m.\0I+r*j4a.N0Q3T-~2{'g4[+n.l-A-p
算式：提示-m)G+m2V5f+s3k2|:?*j4a.N0Q3T-~2{'g4[+n.l-A-p
答：乙筐原有/~)a9F个西瓜。*j4a.N0Q3T-~2{'g4[+n.l-A-p