Б) 2/3+4/27

To add the fractions 2/3 and 4/27, we need to find a common denominator. In this case, the least common denominator is 27, since it is divisible by both 3 and 27.

Now, let's convert the fraction 2/3 into an equivalent fraction with a denominator of 27: 2/3 = (2/3) * (9/9) = 18/27

Now, we can add the two fractions together: 18/27 + 4/27 = (18 + 4)/27 = 22/27

So, the sum of 2/3 and 4/27 is 22/27.