题目内容
解方程.
X+
| 1-
| 3.6X÷3=2.4 |
(1)X+
X=21,
X=21,
X÷
=21÷
,
X=12;
(2)1-
X=
,
1-
X+
X=
+
X,
+
X=1,
+
X-
=1-
,
X=
,
X÷
=
÷
,
X=
,
(3)3.6X÷3=2.4,
3.6X÷3×3=2.4×3,
3.6X=7.2,
3.6X÷3.6=7.2÷3.6,
X=2,
| 3 |
| 4 |
| 7 |
| 4 |
| 7 |
| 4 |
| 7 |
| 4 |
| 7 |
| 4 |
X=12;
(2)1-
| 3 |
| 4 |
| 3 |
| 4 |
1-
| 3 |
| 4 |
| 3 |
| 4 |
| 3 |
| 4 |
| 3 |
| 4 |
| 3 |
| 4 |
| 3 |
| 4 |
| 3 |
| 4 |
| 3 |
| 4 |
| 3 |
| 4 |
| 3 |
| 4 |
| 3 |
| 4 |
| 1 |
| 4 |
| 3 |
| 4 |
| 3 |
| 4 |
| 1 |
| 4 |
| 3 |
| 4 |
X=
| 1 |
| 3 |
(3)3.6X÷3=2.4,
3.6X÷3×3=2.4×3,
3.6X=7.2,
3.6X÷3.6=7.2÷3.6,
X=2,
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