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数学
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计算X+2Y+3Z=10
X+2Y+3Z=10
4X+3Y+2Z=15
求x+y+z=?
人气:122 ℃ 时间:2020-02-05 08:54:17
解答
一,X+2Y+3Z=10
二,4X+3Y+2Z=15
一 + 二 = 5x+5y+5z =25
x+y+z=5
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