题目内容
解方程
(1)x+
| (2)x-
| (3)
|
(1)x+
=
,
x+
-
=
-
,
x=
;
(2)x-
=
,
x-
+
=
+
,
x=
;
(3)
-2x=0.125,
-2x+2x=0.125+2x,
=0.125+2x,
-0.125=0.125+2x-0.125,
=2x,
÷2=2x÷2,
x=
.
| 2 |
| 3 |
| 4 |
| 5 |
x+
| 2 |
| 3 |
| 2 |
| 3 |
| 4 |
| 5 |
| 2 |
| 3 |
x=
| 2 |
| 15 |
(2)x-
| 7 |
| 8 |
| 1 |
| 4 |
x-
| 7 |
| 8 |
| 7 |
| 8 |
| 1 |
| 4 |
| 7 |
| 8 |
x=
| 9 |
| 8 |
(3)
| 1 |
| 6 |
| 1 |
| 6 |
| 1 |
| 6 |
| 1 |
| 6 |
| 1 |
| 24 |
| 1 |
| 24 |
x=
| 1 |
| 48 |
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