SOLUTION: x+3y+z=9
3x+y-z=-1
2x+2y-z=3
Algebra.Com
Question 1134322: x+3y+z=9
3x+y-z=-1
2x+2y-z=3
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
x+3y+z=9
3x+y-z=-1
2x+2y-z=3
------------
Add eqns 1 & 2, then eqns 1 & 3.
---> 2 eqns in x & y, no more z.
Go from there.
RELATED QUESTIONS
X+3y+z=9
3x+y-z=-1... (answered by Alan3354)
Linear Systems
2x+3y-z=1
x-y-z=2... (answered by AnlytcPhil)
solve using cramer rule :- 3x+2y+4z=19 2x-y+z=3 6x+7y-z=7
x-y+z= 1 x+y+z=2 2x-y+z=5... (answered by ikleyn)
x + 3y + z= 6
3x + y - z= -2
2x + 2y - z =... (answered by stanbon)
x+3y+z=6
3x+y-z=-2... (answered by ewatrrr)
Solve using addition method
x+3y+z=6
3x+y-z=-2... (answered by Alan3354)
solve using cramer rule :- 3x+2y+4z=19 2x-y+z=3 6x+7y-z=7
x-y+2z=1 x+y+z=2 2x-y+z=5... (answered by ikleyn)
solve each system by using an augmented matrix.
x-2y+z=9
3x+y=1... (answered by swincher4391)
x+2y-z=3
2x-y+z=22
x+3y-z=4... (answered by MathLover1,greenestamps)