SOLUTION: I need to solve the following systems of three equations x+y+z=5 x-y+z=1 x-z=y+3 Thank you so very much

Question 121386: I need to solve the following systems of three equations
x+y+z=5
x-y+z=1
x-z=y+3
Thank you so very much
Answer by Fombitz(32388) (Show Source): You can put this solution on YOUR website!
x+y+z=5
x-y+z=1
x-y-z=3

You didn't specify a solution method.
Hopefully a matrix solution is OK.
[A][x]=[b]
where
[A]=
[x]=
[b]=
We then need to find the inverse of [A]([Ainv]) and matrix multiply by [b] to get [x].
[A][x]=[b]
[x]=[Ainv][b]
[Ainv]=
[Ainv][b]=
[x]=
x=4
y=2
z=-1
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