To convert the mixed number 2 3/5 into a fraction, you first need to multiply the whole number by the denominator of the fraction. In this case, you multiply 2 (the whole number part) by 5 (the denominator), which gives you 10.
Next, you add the numerator of the fraction (3) to this result. So, 10 + 3 equals 13.
Now, you place this sum over the original denominator. Thus, 2 3/5 becomes 13/5 as an improper fraction.
So, the fraction form of 2 3/5 is 13/5.