题目内容
解方程
X÷
| x-
|
|
(1)x÷
=
,
x÷
×
=
×
,
x=
;
(2)x-
x=
,
x=
,
x÷
=
÷
,
x=2.5;
(3)
x=
+
,
x=
,
x÷
=
÷
,
x=
.
| 14 |
| 15 |
| 1 |
| 7 |
x÷
| 14 |
| 15 |
| 14 |
| 15 |
| 1 |
| 7 |
| 14 |
| 15 |
x=
| 2 |
| 15 |
(2)x-
| 2 |
| 3 |
| 5 |
| 6 |
| 1 |
| 3 |
| 5 |
| 6 |
| 1 |
| 3 |
| 1 |
| 3 |
| 5 |
| 6 |
| 1 |
| 3 |
x=2.5;
(3)
| 4 |
| 7 |
| 1 |
| 4 |
| 1 |
| 2 |
| 4 |
| 7 |
| 3 |
| 4 |
| 4 |
| 7 |
| 4 |
| 7 |
| 3 |
| 4 |
| 4 |
| 7 |
x=
| 21 |
| 16 |
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