题目内容
解方程
(1)
x=(95-x)×
(2)
=2.5:0.9.
(1)
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| 2 |
| 1 |
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(2)
| 7.5 |
| x |
(1)
x=(95-x)×
,
x=95×
-
x,
x+
x=
,
x=
,
x÷
=
÷
,
x=38;
(2)
=2.5:0.9,
2.5x=7.5×0.9,
2.5x=6.75,
2.5x÷2.5=6.75÷2.5,
x=2.7.
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| 2 |
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| 3 |
| 1 |
| 2 |
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| 3 |
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| 3 |
| 1 |
| 2 |
| 1 |
| 3 |
| 95 |
| 3 |
| 5 |
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| 95 |
| 3 |
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| 95 |
| 3 |
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x=38;
(2)
| 7.5 |
| x |
2.5x=7.5×0.9,
2.5x=6.75,
2.5x÷2.5=6.75÷2.5,
x=2.7.
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