21+64=
To solve the problem of adding the fractions and , we start by finding the least common denominator (LCD).
First, we identify the denominators: 2 and 6. The least common multiple of 2 and 6 is 6, which will be our LCD.
Next, we convert each fraction to have the denominator of 6:
Convert to an equivalent fraction with a denominator of 6. Since , multiply the numerator by 3: .
The fraction already has the desired common denominator.
Now that the fractions are and , we can add them:
.
The solution to the problem is , which matches choice 2.