已知方程组4x-5y+2z=0,则x:y:z=?x+4y=3z
人气:251 ℃ 时间:2019-09-30 07:18:02
解答
两方程组先消x得,y:z=2:3,再消z得,x:y=1:2,综合可得,x:y:z=1:2:3
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