What is 4/9 plus 2/9?

What is 4/9 plus 2/9?

• A. 4/18
• B. 6/18
• C. 8/9
• D. 6/9

Answer: (D)

Adding fractions with the same denominator keeps the bottom number the same and adds the tops. So 4/9 plus 2/9 is (4 + 2)/9, which equals 6/9. That value can be simplified to 2/3, since both numerator and denominator divide by 3. Among the given options, the exact sum before simplification is 6/9, matching the result of the addition. The other fractions represent different values (for example, 4/18 is 2/9, 6/18 is 1/3, and 8/9 is larger than the sum), so they aren’t correct.

Adding fractions with the same denominator keeps the bottom number the same and adds the tops. So 4/9 plus 2/9 is (4 + 2)/9, which equals 6/9. That value can be simplified to 2/3, since both numerator and denominator divide by 3. Among the given options, the exact sum before simplification is 6/9, matching the result of the addition. The other fractions represent different values (for example, 4/18 is 2/9, 6/18 is 1/3, and 8/9 is larger than the sum), so they aren’t correct.