Here are two sets of numbers. You must calculate the answer and decipher the code. You do not need a calculator, although it does make it much easier.

Here are the sets of numbers.

[ 101 -42 ]

[ 453 255]

[ 345 92 ]

[801 471 ]

[ 6 -5 ] to the -1

[ 29 18 ]

the first is the code, and you have to multiply it by the inverse of the second.

Inverse=1/determinant x matrix

to find the determinant, do the topleft corner times the bottomright corner, minus the other two corners multiplied.