SOLUTION: how do you solve the system of equations with these three equations? x-y+z=8 x+y+z=6 x+y-z=-12

SOLUTION: how do you solve the system of equations with these three equations? x-y+z=8 x+y+z=6 x+y-z=-12

Algebra.Com

Question 365371: how do you solve the system of equations with these three equations?
x-y+z=8
x+y+z=6
x+y-z=-12
Answer by Fombitz(32388) (Show Source): You can put this solution on YOUR website!
1.
2.
3.
Add eq. 1 and eq. 3,

.
.
.
Add eq. 1 and eq. 2,

.
.
.
Then from eq. 2,

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