Simplify: (1/3) + (2/3)

To simplify the expression ( (1/3) + (2/3) ), start by recognizing that both fractions have the same denominator. This allows for straightforward addition of the numerators while keeping the denominator constant.

When you add the numerators together, you have:

[

1 + 2 = 3

]

Thus, the operation results in:

[

\frac{3}{3}

]

Now, simplifying ( \frac{3}{3} ) gives you 1. This is represented as a decimal value of 1.0.

This matches with the answer provided, making it the correct choice. The other options, while they represent various decimal values, do not align with the sum of the fractions calculated, which confirms that 1.0 is the correct result of the addition.