Three planes have the following equations...
Not sure on how to approach this question..
I solved this using Maxima and its answer agrees with Oiler's reduced echelon form.
Just use that form to get expressions for your variables, Oiler. You can read them right off. Looking at the last row, what's z? Then find x and y similarly (these depend on k). Is there any k that won't give an answer, or will give more than one answer?