解方程组:x/3=y/4=z/5,x-2y+3z=30
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解方程组:x/3=y/4=z/5,x-2y+3z=30
解方程组:x/3=y/4=z/5,x-2y+3z=30
解方程组:x/3=y/4=z/5,x-2y+3z=30
令x/3=y/4=z/5=k
则:x=3k,y=4k,z=5k
代入x-2y+3z=30得:
3k-8k+15k=30
10k=30
k=3
则:x=9,y=12,z=15
解方程组 x+y+z=5 2x-y-z=4 3x-2y-z=9
解方程组x+y+z=6 x+2y-3z=4 2x-y+z=5
解方程组:x+y+z=4,x+y+2z=5,3x+y-z=6
解方程组 x:y:z=3:4:5,x+2y+z=48
方程组x:y:z=3:4:5 x+2y+z=48的解
方程组2x+3y-z=9 x+y+z=15 5方程组2x+3y-z=9 x+y+z=15 5x-4y-z=0的解,
方程组3x+4y+z=14 x+5y+2z=17 2x+2y-z=3 解方程组
三元一次方程组5x-4y+4z=132x+7y-3z=193x+2y-z=18解这个方程组
解方程组:{z=-11,4x+2y+z=3,25x+5y+z=60
解方程组解方程组{y=2x-7{x+y+z=1{3x-z=4
解方程组 z=x+y 2x-3y+2z=5 x+2y-z=3
解方程组{z=x+y 3x-2y-2z=-5 2x+y-z=3
方程组,2x+3y-4z=-2 3x-2y+5z=26 2x+5z=31,求方程组的解
解方程组:2x+y+z=-4 x+2y+z=-2 x+y+2z=3
解方程组{3x+y-z=4,2x-y+3z=12,x+y+z=6}
解方程组2x+3y-z=12,3x-y+z=4,x+y+z=6
解方程组x+y/2=z+x/3=y+z/4①x+y+z=27②
解方程组x-4y+z=-3,2x+y-z=18,x-y-z=7.