1-25%x=0.875.(1-25)*75%=18.解方程.

2025-06-26 07:26:40
推荐回答(1个)
回答1:

1-25%x=0.875.
1-0.25x=0.875
0.25x=1-0.875
0.25x=0.125
x=0.5
(1-25)*75%=18(不是方程)