Question

ayuda con estos problemas:
1) 2x-3y+z-u=-7
x+y+z+y=0
-x+2y-2z+3u=9
3x-2y+4z+7u=-13

2)x+y-z=1
-y+4z=-2
z=1

Answer 1

gggggggggggggggggggggggggggggggggggggggggggggggggggggggggggg

Answer 2

Respuesta:

lkkkkkkkkkkkkkkkkkkkk

Explicación paso a paso: