题目内容
7
:1
的化简比是( )
| 1 |
| 2 |
| 1 |
| 2 |
| A.5 | B.5:1 | C.1:5 |
7
:1
,
=
:
,
=(
×
):(
×
),
=5:1;
故选:B.
| 1 |
| 2 |
| 1 |
| 2 |
=
| 15 |
| 2 |
| 3 |
| 2 |
=(
| 15 |
| 2 |
| 2 |
| 3 |
| 3 |
| 2 |
| 2 |
| 3 |
=5:1;
故选:B.
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题目内容
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| A.5 | B.5:1 | C.1:5 |
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| 15 |
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| 2 |
| 15 |
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