Add 54/21 and 4/27
1st number: 2 12/21, 2nd number: 4/27
54/21 + 4/27 is 514/189.
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,
54/21 = 54 × 9/21 × 9 = 486/189 - Likewise, for the 2nd fraction, since 27 × 7 = 189,
4/27 = 4 × 7/27 × 7 = 28/189 - Add the two like fractions:
486/189 + 28/189 = 486 + 28/189 = 514/189 - So, 54/21 + 4/27 = 514/189
In mixed form: 2136/189
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/21+8/27 54/42+4/27 54/21+4/54 54/21+12/27 54/63+4/27 54/21+4/81 54/21+20/27 54/21+28/27