Add 12/21 and 14/27
12/21 + 14/27 is 206/189.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 27 is 189
Next, find the equivalent fraction of both fractional numbers with denominator 189 - For the 1st fraction, since 21 × 9 = 189,
12/21 = 12 × 9/21 × 9 = 108/189 - Likewise, for the 2nd fraction, since 27 × 7 = 189,
14/27 = 14 × 7/27 × 7 = 98/189 - Add the two like fractions:
108/189 + 98/189 = 108 + 98/189 = 206/189 - So, 12/21 + 14/27 = 206/189
In mixed form: 117/189
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/21+14/27 12/21+28/27 12/42+14/27 12/21+14/54 36/21+14/27 12/21+42/27 12/63+14/27 12/21+14/81 60/21+14/27 12/21+70/27 84/21+14/27 12/21+98/27