(1-60%)x =(x+1000) 乘(1-62%)
问题描述:
(1-60%)x =(x+1000) 乘(1-62%)
答
40%X=(X+1000)*38%
0.4X=(X+1000)*0.38
0.4X=0.38X+380
0.02X=380
X=19000
*号是乘号啦~~呵呵~~