make-----making
）用一根繩子測(cè)量井深，單股量，井外余3米，雙股量，到井口差4米，求繩長(zhǎng).（列方程并解答）要詳細(xì)設(shè)繩長(zhǎng)為x米根據(jù)題意得到：x-3=x/2+4x-x/2=3+4x/2=7x=14繩長(zhǎng)為14米。
she is make a card for her sister錯(cuò)在那里?
she is make a card for her sister錯(cuò)在那里?
英語(yǔ)人氣：803 ℃時(shí)間：2020-04-10 16:16:28
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