Add 24/27 and 21/7
1st number: 24/27, 2nd number: 3 0/7
24/27 + 21/7 is 35/9.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 27 and 7 is 189
Next, find the equivalent fraction of both fractional numbers with denominator 189 - For the 1st fraction, since 27 × 7 = 189,
24/27 = 24 × 7/27 × 7 = 168/189 - Likewise, for the 2nd fraction, since 7 × 27 = 189,
21/7 = 21 × 27/7 × 27 = 567/189 - Add the two like fractions:
168/189 + 567/189 = 168 + 567/189 = 735/189 - 735/189 simplified gives 35/9
- So, 24/27 + 21/7 = 35/9
In mixed form: 38/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 48/27+21/7 24/27+42/7 24/54+21/7 24/27+21/14 72/27+21/7 24/27+63/7 24/81+21/7 24/27+21/35 24/27+21/49