题目内容
解方程.
x+
=口口
6-
x=
.
| 3 |
| d |
| 口9 |
| 2 |
6-
| d |
| 7 |
| 9 |
| 口4 |
(5)
x+
=55,
x+
-
=55-
,
x=
,
x×
=
×
,
x=
;
(2)6-
x=
,
6-
x+
x=
+
x,
+
x=6,
+
x-
=6-
,
x=
,
x×
=
×
,
x=
.
| 2 |
| 5 |
| 59 |
| 2 |
| 2 |
| 5 |
| 59 |
| 2 |
| 59 |
| 2 |
| 59 |
| 2 |
| 2 |
| 5 |
| 2 |
| 2 |
| 2 |
| 5 |
| 5 |
| 2 |
| 2 |
| 2 |
| 5 |
| 2 |
x=
| 5 |
| 2 |
(2)6-
| 5 |
| 5 |
| 9 |
| 52 |
6-
| 5 |
| 5 |
| 5 |
| 5 |
| 9 |
| 52 |
| 5 |
| 5 |
| 9 |
| 52 |
| 5 |
| 5 |
| 9 |
| 52 |
| 5 |
| 5 |
| 9 |
| 52 |
| 9 |
| 52 |
| 5 |
| 5 |
| 55 |
| 52 |
| 5 |
| 5 |
| 5 |
| 5 |
| 55 |
| 52 |
| 5 |
| 5 |
x=
| 55 |
| 2 |
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