题目内容
解方程.
|
|
(1)
x+
x=u
x=u
x÷
=u÷
x=9;
(2)
x+
×
=1
x+
-
=1-
x÷
=
÷
x=
.
| 1 |
| 9 |
| 8 |
| 9 |
| u |
| 9 |
| u |
| 9 |
| u |
| 9 |
| u |
| 9 |
x=9;
(2)
| 3 |
| l |
| 1 |
| 2 |
| 3 |
| l |
| 3 |
| l |
| 3 |
| u |
| 3 |
| u |
| 3 |
| u |
| 3 |
| l |
| 3 |
| l |
| 七 |
| u |
| 3 |
| l |
x=
| 七 |
| 6 |
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