Since $\frac{25}{20}$ and $\frac{8}{20}$ have the same denominator, add them by adding their numerators.
$$sort(\frac{25+8}{20},2-\frac{7}{5})$$
Add $25$ and $8$ to get $33$.
$$sort(\frac{33}{20},2-\frac{7}{5})$$
Convert $2$ to fraction $\frac{10}{5}$.
$$sort(\frac{33}{20},\frac{10}{5}-\frac{7}{5})$$
Since $\frac{10}{5}$ and $\frac{7}{5}$ have the same denominator, subtract them by subtracting their numerators.
$$sort(\frac{33}{20},\frac{10-7}{5})$$
Subtract $7$ from $10$ to get $3$.
$$sort(\frac{33}{20},\frac{3}{5})$$
Least common denominator of the numbers in the list $\frac{33}{20},\frac{3}{5}$ is $20$. Convert numbers in the list to fractions with denominator $20$.
$$\frac{33}{20},\frac{12}{20}$$
To sort the list, start from a single element $\frac{33}{20}$.
$$\frac{33}{20}$$
Insert $\frac{12}{20}$ to the appropriate location in the new list.
$$\frac{12}{20},\frac{33}{20}$$
Replace the obtained fractions with the initial values.