SOLUTION: Write an equation in three variables. Solve the equation for each variable. Show all your steps.

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Question 895040: Write an equation in three variables. Solve the equation for each variable. Show all your steps.
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
1.x%2By%2Bz=2
2.x%2By-z=0
3.x-y-z=6
Add eq. 1 and eq. 2,
x%2By%2Bz%2Bz%2By-z=2%2B0
2x%2B2y=2
4.x%2By=1
.
.
.
Add eq. 1 and eq. 3,
x%2By%2Bz%2Bx-y-z=2%2B6
2x=8
x=4
Then from above,
x%2By=1
4%2By=1
y=-3
and finally,
x%2By%2Bz=2
4-3%2Bz=2
z=1