若X:Y:Z=2:3:4求X+Y+Z/X-2Y+3X的值
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若X:Y:Z=2:3:4求X+Y+Z/X-2Y+3X的值若X:Y:Z=2:3:4求X+Y+Z/X-2Y+3X的值若X:Y:Z=2:3:4求X+Y+Z/X-2Y+3X的值X:Y:Z=2:3:4则x=2k
若X:Y:Z=2:3:4求X+Y+Z/X-2Y+3X的值
若X:Y:Z=2:3:4求X+Y+Z/X-2Y+3X的值
若X:Y:Z=2:3:4求X+Y+Z/X-2Y+3X的值
X:Y:Z=2:3:4
则x=2k y=3k z=4k
X+Y+Z/X-2Y+3X
(2k+3k+4k)/(2k-6k+12k)
=9k/8k
=9/8
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