" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2025 KUDO.TIPS - All rights reserved.
x+y+z=6
x+y+2z=5
------------ -
-z = 1
z = -1
x + y + z =6 |x1
x + y +2z = 5 |x1
===============
x + y + z =6
x + y + 2z =5
=========== --
-z = 1
z=-1
Maka Nilai z => (-1)