Add 6/21 and 42/27
1st number: 6/21, 2nd number: 1 15/27
6/21 + 42/27 is 116/63.
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,
6/21 = 6 × 9/21 × 9 = 54/189 - Likewise, for the 2nd fraction, since 27 × 7 = 189,
42/27 = 42 × 7/27 × 7 = 294/189 - Add the two like fractions:
54/189 + 294/189 = 54 + 294/189 = 348/189 - 348/189 simplified gives 116/63
- So, 6/21 + 42/27 = 116/63
In mixed form: 153/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 12/21+42/27 6/21+84/27 6/42+42/27 6/21+42/54 18/21+42/27 6/63+42/27 6/21+42/81 30/21+42/27 42/21+42/27