已知 X+Y/5=Y+X/6=Z+X/7,且XYZ≠0,求X:Y:Z
请把过程写下,以便我弄明白,
人气:301 ℃ 时间:2019-10-27 10:37:20
解答
由X+Y/5=Y+X/6
解得,
X= 24Y/25
把上式代入:
Y+X/6=Z+X/7
解得
Z=179Y/175
所以
X:Y:Z =(24Y/25):Y:179Y/175
=120:175:179
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