How to add matrices that involve improper fractions?

Question

I have this assignment and one of the questions were:

C= [ 7 11] D= [ 1 0 ]
[ -15 3] [ 4 -11/12]

This is what I have so far

C+D= [ 8 11 ]
-11 25/12 So the 25/12, do I keep it that way or do I convert it to a decimal?

Answer 1

No reason to try to use decimals. Fractions are exact.

Your addition is correct.

Answer 2

Thank you :)