题目内容
求未知数.
| x-37.5%x=105 |
|
2.4+140%x=108. |
| (1)x-37.5%x=105, |
| 62.5%x=105, 62.5%x÷62.5%=105÷62.5%, X=168; |
| 3 |
| 4 |
| 6 |
| 7 |
| 5 |
| 7 |
| 6 |
| 7 |
| 3 |
| 4 |
| 5 |
| 7 |
| 6 |
| 7 |
| 15 |
| 28 |
| 6 |
| 7 |
| 6 |
| 7 |
| 15 |
| 28 |
| 6 |
| 7 |
X=
| 5 |
| 8 |
(3)2.4+140%x=108,
2.4+140%x-2.4=108-2.4,
140%x=105.6,
140%x÷140%=105.6÷140%,
X=75
| 3 |
| 7 |
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