题目内容
求未知数x.
12-5x=6.5
=
:x=
.
12-5x=6.5
| 22.5 |
| 4 |
| x |
| 5 |
| 9 |
| 16 |
| 3 |
| 16 |
(1)12-5x=6.5,
5x=12-6.5,
5x=5.5
x=1.1;
(2)
=
,
4x=22.5×5,
4x=112.5,
x=28.125;
(3)
:x=
,
3x=
×16,
3x=9,
x=3.
5x=12-6.5,
5x=5.5
x=1.1;
(2)
| 22.5 |
| 4 |
| x |
| 5 |
4x=22.5×5,
4x=112.5,
x=28.125;
(3)
| 9 |
| 16 |
| 3 |
| 16 |
3x=
| 9 |
| 16 |
3x=9,
x=3.
练习册系列答案
相关题目