[(2*-6*7)+(5*3*-4)+(1*8*9)]-[(-4*-6*9)+(5*1*7)+(3*8*2)]=[-84-60+72]-[216+35+48]=-371
A11 |-6 8|
3 7
A12|5 8|
9 7
A13|5 -6|
9 3
[(2*-6*7)+(5*3*-4)+(1*8*9)]-[(-4*-6*9)+(5*1*7)+(3*8*2)]=[-84-60+72]-[216+35+48]=-371
A11 |-6 8|
3 7
A12|5 8|
9 7
A13|5 -6|
9 3