Simplify: (7/8) + (5/8)

To simplify the expression (7/8) + (5/8), you start by recognizing that both fractions have the same denominator, which is 8. When adding fractions with the same denominator, you can simply add the numerators together while keeping the denominator the same.

So, you add the numerators:

7 + 5 equals 12.

Next, you place the result over the common denominator:

12/8.

Now, this fraction can be simplified. You can divide both the numerator and the denominator by 4, which is their greatest common divisor:

12 ÷ 4 = 3,

8 ÷ 4 = 2.

This gives you the simplified fraction:

3/2.

When expressed as a decimal, 3/2 is equal to 1.5. Thus, the correct answer corresponds to the decimal representation of the simplified fraction.