Add 6/27 and 30/21
1st number: 6/27, 2nd number: 1 9/21
6/27 + 30/21 is 104/63.
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,
30/21 = 30 × 9/21 × 9 = 270/189 - Add the two like fractions:
42/189 + 270/189 = 42 + 270/189 = 312/189 - 312/189 simplified gives 104/63
- So, 6/27 + 30/21 = 104/63
In mixed form: 141/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 12/27+30/21 6/27+60/21 6/54+30/21 6/27+30/42 18/27+30/21 6/27+90/21 6/81+30/21 6/27+30/63 30/27+30/21 42/27+30/21