First remove the parenthesis. 5/6 - 2/3 Then we want the least common denominator which is 6 because 2 * 3 = 6. Now we want to adjust the fractions based on our LCD. So 5/6 - 2 * 2/6 Now since the denominators are equal we can combine the numerators. So 5 - 2 * 2/6 First multiply 2 by 2 to get 4. Our expression then becomes 5 - 4/6 which translates to 1/6. Hope this helps!