How do you write the decimal 10.4 in simplest form

10.4 over 1
10.4 over 1 ( 10 over 10) = 140 over 10
104 ÷ 2 over 10 ÷ 2 ➡52 over 5
Now, we're solving the "improper fraction" 10 and 2 over 5
Therefore, your answer for "10.4" in simplest form is "10 and 2 over 5

I’m pretty sure it’s i think : /