题目内容
解方程或比例
①
| ②x-
| ③42:
|
(1)
=
,
3x=1.75×6,
3x÷3=10.5÷3,
x=3.5;
(2)x-
x=
,
x=
,
x×
=
×
,
x=3,;
(3)42:
=x:
,
x=42×
,
x×
=30×
,
x=50.
| 1.75 |
| 3 |
| x |
| 6 |
3x=1.75×6,
3x÷3=10.5÷3,
x=3.5;
(2)x-
| 3 |
| 5 |
| 6 |
| 5 |
| 2 |
| 5 |
| 6 |
| 5 |
| 2 |
| 5 |
| 5 |
| 2 |
| 6 |
| 5 |
| 5 |
| 2 |
x=3,;
(3)42:
| 3 |
| 5 |
| 5 |
| 7 |
| 3 |
| 5 |
| 5 |
| 7 |
| 3 |
| 5 |
| 5 |
| 3 |
| 5 |
| 3 |
x=50.
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