to find out we multiply the whole number (10) by the denominator (x/8) as shown below
<em>10 * 8 = 80</em>
then we just add the product to the numerator (3/y)
<em>3 + 80 = 83</em>
usually we would simplify the new expresion given -wich is 83/8- by finding the least common denominator, however this improper fraction is already in simplest form