题目内容
解方程.
x+
x=
÷x=
.
x+
| 2 |
| 3 |
| 4 |
| 5 |
| 7 |
| 2 |
| 14 |
| 5 |
(1)x+
x=
1
x=
1
x÷1
=
÷1
x=
;
(2)
÷x=
÷x×x=
×x
÷
=
x÷
x=1
.
| 2 |
| 3 |
| 4 |
| 5 |
1
| 2 |
| 3 |
| 4 |
| 5 |
1
| 2 |
| 3 |
| 2 |
| 3 |
| 4 |
| 5 |
| 2 |
| 3 |
x=
| 12 |
| 25 |
(2)
| 7 |
| 2 |
| 14 |
| 5 |
| 7 |
| 2 |
| 14 |
| 5 |
| 7 |
| 2 |
| 14 |
| 5 |
| 14 |
| 5 |
| 14 |
| 5 |
x=1
| 1 |
| 4 |
练习册系列答案
相关题目