数学~~~~~~~~~~~~~

2025-10-14 10:43:14
推荐回答(1个)
回答1:

A+2
(A+2)*2=2A+4
(2A+4)-3=2A+1
(2A+1)*2=4A+2
(4A+2)-3=4A-1
(4A-1)*2=8A-2
(8A-2)+2=8A