设李老师的糖盒中原来有 x 块糖
( x - 1 )/ 7 + 1 =【 x - 1 - 2 -( x - 1 )/ 7 】/ 7 + 2
x - 1 + 7 = x - 1 - 2 - (x - 1 )/ 7 + 14
7 x + 42 = 7 x + 77 - x + 1
42 = 78 - x
x = 36
设李老师的糖盒中原来有 x 块糖
( x - 1 )/ 7 + 1 =【 x - 1 - 2 -( x - 1 )/ 7 】/ 7 + 2
x - 1 + 7 = x - 1 - 2 - (x - 1 )/ 7 + 14
7 x + 42 = 7 x + 77 - x + 1
42 = 78 - x
x = 36