题目内容
| 解方程: (1)42:
| (2)
|
(1)42:
=x:
,
x=42×
,
x×
=30×
,
x=50;
(2)
x+
x=
,
x=
,
x×
=
×
,
x=
.
| 3 |
| 5 |
| 5 |
| 7 |
| 3 |
| 5 |
| 5 |
| 7 |
| 3 |
| 5 |
| 5 |
| 3 |
| 5 |
| 3 |
x=50;
(2)
| 1 |
| 2 |
| 2 |
| 3 |
| 5 |
| 6 |
| 7 |
| 6 |
| 5 |
| 6 |
| 7 |
| 6 |
| 6 |
| 7 |
| 5 |
| 6 |
| 6 |
| 7 |
x=
| 5 |
| 7 |
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