5 + ( x-5 ) / 5 = 10 + [ x - 5 - ( x-5 ) / 5 -10 ] / 5
25 + x - 5 = 50 + x - 5 - ( x-5 ) / 5 -10
100 = 175 - x + 5
x = 80
树苗共80颗 4个组
-----------------------------
如仍有疑问请追问,如还有有其它问题请采纳后再继续发问.
5 + ( x-5 ) / 5 = 10 + [ x - 5 - ( x-5 ) / 5 -10 ] / 5
25 + x - 5 = 50 + x - 5 - ( x-5 ) / 5 -10
100 = 175 - x + 5
x = 80
树苗共80颗 4个组
-----------------------------
如仍有疑问请追问,如还有有其它问题请采纳后再继续发问.