解方程组x/4=y/5=z/6 2x+3y-4y+3=0x/4=y/5=z/6 2x+3y-4y+3=0
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解方程组x/4=y/5=z/62x+3y-4y+3=0x/4=y/5=z/62x+3y-4y+3=0解方程组x/4=y/5=z/62x+3y-4y+3=0x/4=y/5=z/62x+3y-4y+3=0
解方程组x/4=y/5=z/6 2x+3y-4y+3=0x/4=y/5=z/6 2x+3y-4y+3=0
解方程组x/4=y/5=z/6 2x+3y-4y+3=0
x/4=y/5=z/6 2x+3y-4y+3=0
解方程组x/4=y/5=z/6 2x+3y-4y+3=0x/4=y/5=z/6 2x+3y-4y+3=0
设x/4=y/5=z/6 =m
x=4m,y=5m,z=6m
2x+3y-4z+3=0
8m+15m-24m+3=0
m=3
x=4m=12
y=5m=15
z=6m=18
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{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+z=5 2x-y-z=4 3x-2y-z=9
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