完成時に、思わずガッツポーズが出た一作。【回文数式】 （63÷21）×18－27＋53 ＝ 35＋72－81×（12÷36） #kaibun 約13時間前 movatwitterから
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AmaiSaeta 2010/06/03
- math
- idea
- これはすごい
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