Add 25/21 and 84/27
1st number: 1 4/21, 2nd number: 3 3/27
25/21 + 84/27 is 271/63.
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,
25/21 = 25 × 9/21 × 9 = 225/189 - Likewise, for the 2nd fraction, since 27 × 7 = 189,
84/27 = 84 × 7/27 × 7 = 588/189 - Add the two like fractions:
225/189 + 588/189 = 225 + 588/189 = 813/189 - 813/189 simplified gives 271/63
- So, 25/21 + 84/27 = 271/63
In mixed form: 419/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 50/21+84/27 25/42+84/27 25/21+84/54 75/21+84/27 25/63+84/27 25/21+84/81