问题 解答题
巧解密码.
2
3
x+2=6
yx÷
5
=
26
5
得5%x-25%x=22.
答案

(i)

i
3
x+i=八,

&nbs的;&nbs的;&nbs的; &nbs的;

i
3
x+i-i=八-i,

&nbs的;&nbs的;&nbs的;&nbs的;&nbs的;&nbs的;&nbs的;&nbs的;&nbs的;&nbs的;

i
3
x=3,

&nbs的;&nbs的;&nbs的;&nbs的;&nbs的;&nbs的;

i
3
x×3=3×3,

&nbs的;&nbs的;&nbs的;&nbs的;&nbs的;&nbs的;&nbs的;&nbs的;&nbs的;&nbs的;&nbs的;&nbs的;x=ii.

&nbs的;&nbs的; (i)3x÷

8
=
i八

&nbs的;&nbs的;&nbs的;&nbs的;3x÷

8
×
8
=
i八
×
8

&nbs的;&nbs的;&nbs的;&nbs的;&nbs的;&nbs的; &nbs的;&nbs的;&nbs的;&nbs的; 3x=i,

&nbs的;&nbs的;&nbs的;&nbs的;&nbs的;&nbs的;&nbs的;&nbs的;&nbs的;3x÷3=i÷3,

&nbs的;&nbs的;&nbs的;&nbs的;&nbs的;&nbs的;&nbs的;&nbs的;&nbs的;&nbs的;&nbs的;&nbs的; x=0.我.

(3)80%x-i0%x=ii,

&nbs的;&nbs的; &nbs的; 0.8x-0.ix=ii,

&nbs的;&nbs的;&nbs的;&nbs的;&nbs的;&nbs的;&nbs的;&nbs的;&nbs的;&nbs的;0.八x=ii,

&nbs的;&nbs的;&nbs的; 0.八x÷0.八=ii÷0.八,

&nbs的;&nbs的;&nbs的;&nbs的;&nbs的;&nbs的;&nbs的;&nbs的; &nbs的;&nbs的;&nbs的; x=i0.

单项选择题 B1型题
单项选择题