Add 8/21 and 30/27
1st number: 8/21, 2nd number: 1 3/27
8/21 + 30/27 is 94/63.
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,
8/21 = 8 × 9/21 × 9 = 72/189 - Likewise, for the 2nd fraction, since 27 × 7 = 189,
30/27 = 30 × 7/27 × 7 = 210/189 - Add the two like fractions:
72/189 + 210/189 = 72 + 210/189 = 282/189 - 282/189 simplified gives 94/63
- So, 8/21 + 30/27 = 94/63
In mixed form: 131/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/21+30/27 8/21+60/27 8/42+30/27 8/21+30/54 24/21+30/27 8/21+90/27 8/63+30/27 8/21+30/81 40/21+30/27 56/21+30/27