matrices question

[steep mountain]

i wanted to ask a question that when you find determinant, you divide ad-joint number with its denominator of determinant

[steep mountain]

so 4/4 gives 1 and 2/4 gives 2, can i write the rest which is not divisible by 4 as 0/4 and 1/4?

[steep mountain]

is it right what i wrote

[steep mountain]

should i write 0 or 0/4 or leave 0 as it is probably this im writing with the denominator

inverse that i got is 1/4

[celest fog]

This i correct just simply write 0 instead 0/4.

[steep mountain]

i can write 0 rather than 0/4

now get it

.close