2.5x56+4.5x65的简便算
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解决时间 2021-04-04 04:42
- 提问者网友：轻浮
- 2021-04-03 12:21
2.5x56+4.5x65的简便算
最佳答案
- 五星知识达人网友：野味小生
- 2021-04-03 12:51
=2.5×56+9×0.5×5×13
=2.5×56+117×2.5
=2.5×173
=2.5×172+2.5×1
=2.5×4×43+2.5
=10×43+2.5
=430+2.5
=432.5
=2.5×56+117×2.5
=2.5×173
=2.5×172+2.5×1
=2.5×4×43+2.5
=10×43+2.5
=430+2.5
=432.5
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