题目内容
(5
-2
)+(5
-3
)=( )
| 1 |
| 3 |
| 1 |
| 2 |
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| 2 |
| 1 |
| 3 |
| A.4 | B.5 | C.6 | D.7 |
(5
-2
)+(5
-3
),
=5
-2
+5
-3
,
=5
-3
+5
-2
,
=2+(5
-2
),
=2+3,
=5;
故选:B.
| 1 |
| 3 |
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| 2 |
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| 2 |
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| 3 |
=5
| 1 |
| 3 |
| 1 |
| 2 |
| 1 |
| 2 |
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| 3 |
=5
| 1 |
| 3 |
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| 3 |
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| 2 |
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| 2 |
=2+(5
| 1 |
| 2 |
| 1 |
| 2 |
=2+3,
=5;
故选:B.
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