已知x+2y-3x=0,2x+3y+5z=o.求x+y+z除以x-y+z
人气:283 ℃ 时间:2019-12-05 05:30:06
解答
x+2y-3z=0
2x+3y+5z=0
可以把x,y解出来
x+2y=3z
2x+3y=-5z
x=-19z
y=11z
x+y+z除以x-y+z=-7z除以-29z=7/29
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