Question 1158779
solve the system of linear equations x+y+2z+3w=13, x-2y+z+w=8, 3x+y+z-w=1,       a)find all solutions if any exist, by using gaussian elemination method.       b)find all solutions if any exist, by using gauss_jordan method.
=================
4 variables but only 3 equations.
No unique solution.