8.7X/7-2.8=116.2解方程,急,誰答誰得好評!
8.7X/7-2.8=116.2解方程,急,誰答誰得好評!
數(shù)學(xué)人氣:574 ℃時間:2020-05-18 02:02:40
優(yōu)質(zhì)解答
先算出7- 2.8 得4.2 再把方程兩邊同時乘4.2???8.7x/4.2=116.28.7x=116.2x4.2??μ?????????????????
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