x+y+z=17 2x-y-2z=1 3x+y-4z=3 怎么解
问题描述:
x+y+z=17 2x-y-2z=1 3x+y-4z=3 怎么解
答
x+y+z=17 2x-y-2z=1 3x+y-4z=3
x= 8,y= 3,z= 6