题目内容
解方程
X-
X=14
1.2:
=
.
X-
| 2 |
| 9 |
1.2:
| 2 |
| 3 |
| X |
| 5 |
(1)x-
x=14,
x=14,
x×
=14×
,
x=18;
(2)1.2:
=
,
x=1.2×5,
x×
=6×
,
x=9.
| 2 |
| 9 |
| 7 |
| 9 |
| 7 |
| 9 |
| 9 |
| 7 |
| 9 |
| 7 |
x=18;
(2)1.2:
| 2 |
| 3 |
| x |
| 5 |
| 2 |
| 3 |
| 2 |
| 3 |
| 3 |
| 2 |
| 3 |
| 2 |
x=9.
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