
Reason: 
= 10/3  5/4 
Convert the mixed numbers to topheavy fractions. 
Denominator = 12 
The lowest common multiple of 3 and 4 is 12. Our denominator will be 12. 
10/3 becomes 40/12 
Change 10/3 to 40/12 by multiplying above and below the line by 4. 
5/4 becomes 15/12 
Change 5/4 to 15/12 by multiplying above and below the line by 3. 
= 40/12  15/12 
Now we have fractions with the same denominator. 
= 25/12 
Keep the denominator 12. Subtract 15 from 40 to get the numerator 25. 

Convert to a mixed number. 