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数学
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x+28=1.2x+28 解方程
人气:229 ℃ 时间:2020-03-24 12:28:06
解答
0.2x=0
x=0x+28=1.2x-28这个怎么解啊x+28=1.2x-28x移到右边 变-x-28移到左边 变+2828+28=0.2x56=0.2xx=280
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