题目内容
解方程.
2x+2
| 3x-2
| x-(
|
根据题意可得:
(1)2x+2
=2
,
2x+2
-2
=2
-2
,
2x=0,
2x÷2=0÷2,
x=0;
(2)3x-2
=
,
3x-2
+2
=
+2
,
3x=3,
3x÷3=3÷3,
x=1;
(3)x-(
+
)=
,
x-
=
,
x-
+
=
+
,
x=
.
(1)2x+2
| 3 |
| 4 |
| 3 |
| 4 |
2x+2
| 3 |
| 4 |
| 3 |
| 4 |
| 3 |
| 4 |
| 3 |
| 4 |
2x=0,
2x÷2=0÷2,
x=0;
(2)3x-2
| 1 |
| 8 |
| 7 |
| 8 |
3x-2
| 1 |
| 8 |
| 1 |
| 8 |
| 7 |
| 8 |
| 1 |
| 8 |
3x=3,
3x÷3=3÷3,
x=1;
(3)x-(
| 1 |
| 3 |
| 3 |
| 4 |
| 5 |
| 12 |
x-
| 13 |
| 12 |
| 5 |
| 12 |
x-
| 13 |
| 12 |
| 13 |
| 12 |
| 5 |
| 12 |
| 13 |
| 12 |
x=
| 3 |
| 2 |
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