四川大厦每层楼梯台阶数相同,小华从1楼走到4楼共走了45级台阶,那么他从1楼走到6楼需要走多少级台阶?0c6]0^8j5w5l-s5|)r5S0\3I9T.b3|5o
算式:提示3O5n7q)a6P.H:A;r:f0c6]0^8j5w5l-s5|)r5S0\3I9T.b3|5o
答:他从1楼走到6楼需要走(G4~9M0@级台阶。0c6]0^8j5w5l-s5|)r5S0\3I9T.b3|5o