C1_W2_Assignment Ex 6

When following the row reduction method using the add row function, I perform the calculations for each heading, but still the result is incorrect. Am I doing something really stupid? Most likely I’m making a mistake in the code somewhere.

I think posting this is ok as it’s not the correct solution:

(Solution code removed, as posting it publicly is against the honour code of this community)

ok, appologies, I thought what I was posting was fine. However, I have now resolved the matter. It was an error in my code, an incorrect reference.