题目内容
解下列方程.
X+
=
-2X=
+
+X=1.
X+
| 3 |
| 5 |
| 7 |
| 8 |
| 4 |
| 5 |
| 1 |
| 4 |
| 5 |
| 9 |
| 1 |
| 9 |
(1)X+
=
X+
-
=
-
X=
;
(2)
-2X=
-2X+2X=
+2X
2X+
=
2X+
-
=
-
2X=
2X÷2=
÷2
X=
;
(3)
+
+X=1
+X=1
+X-
=1-
X=
.
| 3 |
| 5 |
| 7 |
| 8 |
X+
| 3 |
| 5 |
| 3 |
| 5 |
| 7 |
| 8 |
| 3 |
| 5 |
X=
| 11 |
| 40 |
(2)
| 4 |
| 5 |
| 1 |
| 4 |
| 4 |
| 5 |
| 1 |
| 4 |
2X+
| 1 |
| 4 |
| 4 |
| 5 |
2X+
| 1 |
| 4 |
| 1 |
| 4 |
| 4 |
| 5 |
| 1 |
| 4 |
2X=
| 11 |
| 20 |
2X÷2=
| 11 |
| 20 |
X=
| 11 |
| 40 |
(3)
| 5 |
| 9 |
| 1 |
| 9 |
| 2 |
| 3 |
| 2 |
| 3 |
| 2 |
| 3 |
| 2 |
| 3 |
X=
| 1 |
| 3 |
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