题目内容
解方程:
(1)x+
=
+
;
(2)x+
=
.
(1)x+
| 2 |
| 3 |
| 1 |
| 12 |
| 3 |
| 4 |
(2)x+
| 3 |
| 5 |
| 11 |
| 12 |
分析:(1)方程的两边同时减去
,即可得解;
(2)方程的两边同时减去
,即可得解.
| 2 |
| 3 |
(2)方程的两边同时减去
| 3 |
| 5 |
解答:解:(1)x+
=
+
,
x+
-
=
-
,
x=
;
(2)x+
=
,
x+
-
=
-
,
x=
.
| 2 |
| 3 |
| 1 |
| 12 |
| 3 |
| 4 |
x+
| 2 |
| 3 |
| 2 |
| 3 |
| 10 |
| 12 |
| 2 |
| 3 |
x=
| 1 |
| 6 |
(2)x+
| 3 |
| 5 |
| 11 |
| 12 |
x+
| 3 |
| 5 |
| 3 |
| 5 |
| 11 |
| 12 |
| 3 |
| 5 |
x=
| 19 |
| 60 |
点评:此题主要考查依据等式的性质解方程的方法的灵活应用.
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