Add 10/21 and 84/27
1st number: 10/21, 2nd number: 3 3/27
10/21 + 84/27 is 226/63.
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,
10/21 = 10 × 9/21 × 9 = 90/189 - Likewise, for the 2nd fraction, since 27 × 7 = 189,
84/27 = 84 × 7/27 × 7 = 588/189 - Add the two like fractions:
90/189 + 588/189 = 90 + 588/189 = 678/189 - 678/189 simplified gives 226/63
- So, 10/21 + 84/27 = 226/63
In mixed form: 337/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/21+84/27 10/42+84/27 10/21+84/54 30/21+84/27 10/63+84/27 10/21+84/81 50/21+84/27 70/21+84/27