12.8 can be converted to a fraction by writing it as a fraction with the decimal part as the numerator and 1 as the denominator.
So, 12.8 can be written as 12.8/1.
To simplify the fraction, we need to find a common factor that can divide both the numerator and the denominator.
In this case, we can divide both 12.8 and 1 by 0.8.
12.8 ÷ 0.8 = 16 and 1 ÷ 0.8 = 1.25
Therefore, 12.8/1 is equal to 16/1.25.
To further simplify the fraction, we can multiply both the numerator and the denominator by 100 to remove the decimals.
16/1.25 = 1600/125
Finally, we can divide both the numerator and the denominator by 25 to get the simplest form.
1600 ÷ 25 = 64 and 125 ÷ 25 = 5
So, 12.8 is equivalent to 64/5 in simplest form.