Expand $\frac{21.35}{5}$ by multiplying both numerator and the denominator by $100$.
$$45.85-\frac{2135}{500}$$
Reduce the fraction $\frac{2135}{500}$ to lowest terms by extracting and canceling out $5$.
$$45.85-\frac{427}{100}$$
Convert decimal number $45.85$ to fraction $\frac{4585}{100}$. Reduce the fraction $\frac{4585}{100}$ to lowest terms by extracting and canceling out $5$.
$$\frac{917}{20}-\frac{427}{100}$$
Least common multiple of $20$ and $100$ is $100$. Convert $\frac{917}{20}$ and $\frac{427}{100}$ to fractions with denominator $100$.
$$\frac{4585}{100}-\frac{427}{100}$$
Since $\frac{4585}{100}$ and $\frac{427}{100}$ have the same denominator, subtract them by subtracting their numerators.
$$\frac{4585-427}{100}$$
Subtract $427$ from $4585$ to get $4158$.
$$\frac{4158}{100}$$
Reduce the fraction $\frac{4158}{100}$ to lowest terms by extracting and canceling out $2$.
