题目内容
奥斑马与小泉共有若干本书,其中奥斑马的书是小泉的
,后来小泉给了奥斑马3本书,这样奥斑马的书是小泉的
.那么小泉原有多少本书?
| 3 |
| 5 |
| 5 |
| 7 |
| 3 |
| 5 |
| 3 |
| 5 |
=
| 3 |
| 5 |
| 8 |
| 5 |
=
| 3 |
| 8 |
| 5 |
| 7 |
| 5 |
| 7 |
=
| 5 |
| 7 |
| 12 |
| 7 |
=
| 5 |
| 12 |
3÷(
| 5 |
| 12 |
| 3 |
| 8 |
=3÷
| 1 |
| 24 |
=72(本);
72×(1-
| 3 |
| 8 |
=72×
| 5 |
| 8 |
=45(本);
答:小泉原来有45本书.
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题目内容
| 3 |
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| 5 |
| 7 |
| 3 |
| 5 |
| 3 |
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| 3 |
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| 8 |
| 5 |
| 3 |
| 8 |
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| 7 |
| 12 |
| 7 |
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| 12 |
| 5 |
| 12 |
| 3 |
| 8 |
| 1 |
| 24 |
| 3 |
| 8 |
| 5 |
| 8 |