解方程组x/4=y/3=z/5 x-y-z=4a(a是常数)

问题描述:

解方程组x/4=y/3=z/5 x-y-z=4a(a是常数)

解析,
设x/4=y/3=z/5=t
那么,x=4t,y=3t,z=5t
故,4t-3t-5t=4a,t=-a
因此,x=-4a,y=-3a,z=-5a