Final answer:
To add the expressions (1/2)x and (4x/5), find a common denominator, rewrite the fractions with the common denominator, add the numerators, and simplify the expression.
Step-by-step explanation:
To add the expressions (1/2)x and (4x/5), we need to find a common denominator. In this case, the common denominator is 10.
We can rewrite the first expression as (5/10)x and the second expression as (8x/10).
Now, we can add the numerators: (5/10)x + (8/10)x = (13/10)x.
Therefore, the sum of (1/2)x and (4x/5) is (13/10)x.