解(1)
2
3 ÷ (12-12×25%),
=
2
3 ÷ 9,
=
2
27 ;
答:12减去它的25%所得的差,被
2
3 除,商是
2
27 .
(2)设一个数是x.
3
5 x-16×
3
8 =14,
3
5 x-6=14,
3
5 x-6+6=14+6,
3
5 x=20,
3
5 x×
5
3 =20×
5
3 ,
x=33
1
3 ;
答:这个数是33
1
3 .
解(1)
2
3 ÷ (12-12×25%),
=
2
3 ÷ 9,
=
2
27 ;
答:12减去它的25%所得的差,被
2
3 除,商是
2
27 .
(2)设一个数是x.
3
5 x-16×
3
8 =14,
3
5 x-6=14,
3
5 x-6+6=14+6,
3
5 x=20,
3
5 x×
5
3 =20×
5
3 ,
x=33
1
3 ;
答:这个数是33
1
3 .