1-5/9:20/27

To subtract fractions, we need a common denominator. In this case, the least common multiple of 9 and 27 is 27. So, we can rewrite the fractions as follows: 1 - 5/9 = 9/9 - 5/9 = 4/9 20/27 Now, we can subtract the fractions: 4/9 - 20/27 = (4*3)/(9*3) - 20/27 = 12/27 - 20/27 = (12 - 20)/27 = -8/27 Therefore, the result of the subtraction is -8/27