$\"\"$

The expression is $\"\"$

$\"\"$ (Substitute $\"\"$ )

Write the mixed numbers as an improper fraction.

$\"\"$

Rewrite the expression.

$\"\"$ $\"\"$

As denominators are same, write difference of numerators over denominator.

$\"\"$

$\"\"$ (Add the numerators) $\"\"$

The difference is $\"\"$ .