Question

REGRA DE CRAMER (SISTEMA)
x+y+z=1
3x+2z=0
x-y-z=-5

Answer 1

x+y+z+1x-y-z-5=0
2x=-4
x=-4/2
x=-2

3x+2z=0
3*-2+2z=0
-6+2z=0
+2z=6
z=6/3
z=2

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