Add 6/27 and 2/21
6/27 + 2/21 is 20/63.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 27 and 21 is 189
Next, find the equivalent fraction of both fractional numbers with denominator 189 - For the 1st fraction, since 27 × 7 = 189,
6/27 = 6 × 7/27 × 7 = 42/189 - Likewise, for the 2nd fraction, since 21 × 9 = 189,
2/21 = 2 × 9/21 × 9 = 18/189 - Add the two like fractions:
42/189 + 18/189 = 42 + 18/189 = 60/189 - 60/189 simplified gives 20/63
- So, 6/27 + 2/21 = 20/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 12/27+2/21 6/27+4/21 6/54+2/21 6/27+2/42 18/27+2/21 6/27+6/21 6/81+2/21 6/27+2/63 30/27+2/21 6/27+10/21 42/27+2/21 6/27+14/21