Question 174146
2x-5y=-6 
8x+3y=68
----------------
|x y +1|
|2 -5 6| = 0
|8 3 -68|
DET = 6+40 = 46
------------------
x*DET = 340-18
x = 7
-------
-y*DET = -136-48
y = 4