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?