x/2=y/3=z/4,2x+y-z=6 解此方程组
问题描述:
x/2=y/3=z/4,2x+y-z=6 解此方程组
答
x/2=y/3=z/4,
6x=4y=3z
2x+y-z=6
6x+3y-3z=3y=18
y=6
x=4
z=8