X/2.65+Y/2.7=672.48 X/X+Y=0.32怎么算,
人气：184 ℃ 时间：2020-03-27 08:39:36
解答
X/（X+Y）=0.32
X=0.47059Y
X/2.65+Y/2.7=0.17758Y+0.37037Y=0.54795Y=672.48
Y=1227.26
X=577.535
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