SOLUTION: . x + 3y − z = a x + y + 2z = b 2y − 3z = c solve the following systems, where a, b, and c are constants.

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Question 1122615: . x + 3y − z = a
x + y + 2z = b
2y − 3z = c
solve the following systems, where a, b,
and c are constants.

Answer by josgarithmetic(39618)   (Show Source): You can put this solution on YOUR website!
-------------------------------------
. x + 3y − z = a
x + y + 2z = b
2y − 3z = c
-------------------------------------

From first two equations,




Revision to simpler system:







Returning to

Add corresponding members,





from the very first equation,
substitute for y and z, simplify from that.

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