Systems of equations and matrice

Question

Here is my coded message.

If you find the inverse of the 2x2 coding matrix, you can multiply it by the coded message to decode it!

Recall that the 2x2 coding matrix I used was

Find the inverse of the coding matrix to find the decoding matrix.

What is the product of the two matrices?

Now that you have the decoded numbers, covert them to reveal the coded message. Recall:

Answer 1

I used the TI-84 calculator to perform these operations.

The inverse of the matrix is:

[-5 2

3 -1]

Multiplying them together I got:

[13 1 20 8 0 9

19 0 6 21 14 0]

Translates to: MATH IS FUN

Answer 2