The expression is .

To add fractions the denominators must be equal.

Find the least common denominator (LCD).

Multiples of 5: 5,10,15,20,25,30,35,40,45.....

Multiples of 9: 9,18,27,36,45.......

The least common multiple of 5 and 9 is 45.

Rewrite each fraction with a common denominator of 45.

Rewrite fractions using the LCD 45.

                            (Add: ).

The value of the expression is .