If you subtract line2 from line1 you get line3.
This is now 3 simultaneous equations in 3 unknowns,
which can now be solved in the usual way.
Find the general solution of the following system. Indicate which variables are basic and which
are free.
-2x1 + 3x2 + 3x3 + 2x4 = -9
3x1 - 4x2 + x3 = 5
-5x1 + 7x2 + 2x3 -3/2x4 = -14
The answer that i got is wrong( Can anyone could help me to solve this please?