题目内容
解方程
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X-80%X=1.6. |
| 5 |
| 8 |
| 3 |
| 8 |
| 5 |
| 8 |
| 3 |
| 8 |
| 3 |
| 8 |
| 3 |
| 8 |
| 5 |
| 8 |
| 5 |
| 8 |
| 8 |
| 5 |
| 8 |
| 5 |
X=
| 8 |
| 5 |
(2)
| 1 |
| 2 |
| 1 |
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| 5 |
| 7 |
(
| 1 |
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| 1 |
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| 5 |
| 7 |
| 6 |
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X=
| 6 |
| 7 |
(3)X-80%X=1.6
(1-80%)X=1.6
0.2X=1.6,
0.2X÷0.2=1.6÷0.2,
X=8.
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