for points please help: solve these equations?

1 ⤊

for points please help: solve these equations?

2x -3y -z =0
-x +2y +z =5
3x -4y -z =1

2007-12-11 04:20:44 · 3 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics

3 answers

no solution as the first 2 people already answer it

2007-12-12 03:13:00 · answer #1 · answered by star baller 360 5 · 0⤊ 0⤋

Get rid of the z first

add (1) and (2)
x - y = 5 (4)

add (2) and (3)
= 2x -2y = 6 (5)
= x - y = 3 (6)

Note that at this stage, (4) and (5) are inconsistent and the equations are not solvable.

2007-12-11 12:34:27 · answer #2 · answered by Anonymous · 0⤊ 0⤋

sum 1 and 2 x-y=5
sum 2 and 3 2x-2y= 6 so x-y=3 so the system is incompatible
No solution

2007-12-11 12:31:41 · answer #3 · answered by santmann2002 7 · 1⤊ 0⤋