题目内容
解方程或解比例.
2.5:x=
|
|
(1)2.5:x=
:
,
x=
×2.5,
x×4=1.5×4,
x=6;
(2)
x+
x=3,
x=3,
x×
=3×
,
x=4.
| 1 |
| 4 |
| 3 |
| 5 |
| 1 |
| 4 |
| 3 |
| 5 |
| 1 |
| 4 |
x=6;
(2)
| 3 |
| 5 |
| 3 |
| 20 |
| 15 |
| 20 |
| 15 |
| 20 |
| 20 |
| 15 |
| 20 |
| 15 |
x=4.
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