题目内容
解方程
x+
|
|
(1)x+
x=
,
x=
,
x÷
=
÷
,
x=
;
(2)
X÷
=12,
X÷
×
=12×
,
X=3,
x÷
=3÷
,
x=4.5.
| 7 |
| 9 |
| 4 |
| 3 |
| 16 |
| 9 |
| 4 |
| 3 |
| 16 |
| 9 |
| 16 |
| 9 |
| 4 |
| 3 |
| 16 |
| 9 |
x=
| 3 |
| 4 |
(2)
| 2 |
| 3 |
| 1 |
| 4 |
| 2 |
| 3 |
| 1 |
| 4 |
| 1 |
| 4 |
| 1 |
| 4 |
| 2 |
| 3 |
| 2 |
| 3 |
| 2 |
| 3 |
| 2 |
| 3 |
x=4.5.
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