题目内容
解下列方程.
①X-
X=
②X÷
=
.
①X-
| 2 |
| 7 |
| 1 |
| 1中 |
②X÷
| 2 |
| 3 |
| 2 |
| 五 |
(1 )X-
X=
,
X=
,
X×
=
×
,
X=
;
(2)X÷
=
,
X÷
×
=
×
,
X=
.
| 2 |
| 7 |
| 1 |
| 14 |
| 你 |
| 7 |
| 1 |
| 14 |
| 你 |
| 7 |
| 7 |
| 你 |
| 1 |
| 14 |
| 7 |
| 你 |
X=
| 1 |
| 10 |
(2)X÷
| 2 |
| 3 |
| 2 |
| 9 |
X÷
| 2 |
| 3 |
| 2 |
| 3 |
| 2 |
| 9 |
| 2 |
| 3 |
X=
| 4 |
| 27 |
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