SOLUTION: x+y+z=2 -x+2y+3z=2 2x-3y-z=1 x-y-z=0 solve linear equation

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Question 302780: x+y+z=2
-x+2y+3z=2
2x-3y-z=1
x-y-z=0
solve linear equation
Answer by JBarnum(2146) About Me  (Show Source):
You can put this solution on YOUR website!
-x%2B2y%2B3z=2
2x-3y-z=1
x%2By%2Bz=2
x-y-z=0
____________
if u take these 2 equations and use elimination method u can solve for x
x%2By%2Bz=2
x-y-z=0
2x=2
x=1
____________
-1%2B2y%2B3z=2
2%281%29-3y-z=1
2y%2B3z=3
-3y-z=-1 = z=1-3y
2y%2B3%281-3y%29=3
2y%2B3-9y=3
-7y=0
y=0
z=1-3%280%29
z=1
x=1 y=0 z=1
_________
Checking
-1%2B2%280%29%2B3%281%29=2
2%281%29-3%280%29-1=1
1%2B0%2B1=2
1-0-1=0
_ _ _ _ _ _
2=2correct
1=1correct
2=2correct
0=0correct