Compute 3/4 + 5/6.

Compute 3/4 + 5/6.

• A. 19/12
• B. 17/12
• C. 23/12
• D. 19/24

Answer: (A)

Adding fractions requires a common denominator. For 3/4 and 5/6, use the smallest common denominator, which is 12. Convert each fraction: 3/4 becomes 9/12 and 5/6 becomes 10/12. Add the numerators: 9 + 10 = 19, so the sum is 19/12. This is an improper fraction, which you could also write as 1 7/12 if you prefer. The other options don’t match this sum because they reflect using a different common denominator or mis-summing the numerators.

Adding fractions requires a common denominator. For 3/4 and 5/6, use the smallest common denominator, which is 12. Convert each fraction: 3/4 becomes 9/12 and 5/6 becomes 10/12. Add the numerators: 9 + 10 = 19, so the sum is 19/12. This is an improper fraction, which you could also write as 1 7/12 if you prefer. The other options don’t match this sum because they reflect using a different common denominator or mis-summing the numerators.