Write the mixed numbers into improper fraction.

The improper fraction of    ()

The improper fraction of  ()

To add fractions the denominators must be equal.

Find the least common denominator (LCD).

Multiples of 12: 

Multiples of 8: 

The least common multiple of 12 and 8 is 24.

Rewrite each fraction with a common denominator of 24.

Rewrite fractions using the LCD 28.

                                (Simplify)

                                           (Subtract: )

Rewrite the improper fraction as a mixed number.

Begin by dividing 503 by 24. The remainder will be the numerator of the

mixed number’s fraction.

(Rewrite 503 as. Remainder is 23.)

The value of the expression is .