(1)40%x+12=14.4,
40%x=2.4,
x=6;
答:x是6.
(2)100÷2.5+36×
5
9 ,
=40+20,
=60;
答:甲乙两数的和是60.
(3)4×
1
8 +
14
25 ÷
1
3 ,
=
1
2 +
42
25 ,
=
109
50 ;
答:和是
109
25 .
(1)40%x+12=14.4,
40%x=2.4,
x=6;
答:x是6.
(2)100÷2.5+36×
5
9 ,
=40+20,
=60;
答:甲乙两数的和是60.
(3)4×
1
8 +
14
25 ÷
1
3 ,
=
1
2 +
42
25 ,
=
109
50 ;
答:和是
109
25 .