Add 30/21 and 6/81
1st number: 1 9/21, 2nd number: 6/81
30/21 + 6/81 is 284/189.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 81 is 567
Next, find the equivalent fraction of both fractional numbers with denominator 567 - For the 1st fraction, since 21 × 27 = 567,
30/21 = 30 × 27/21 × 27 = 810/567 - Likewise, for the 2nd fraction, since 81 × 7 = 567,
6/81 = 6 × 7/81 × 7 = 42/567 - Add the two like fractions:
810/567 + 42/567 = 810 + 42/567 = 852/567 - 852/567 simplified gives 284/189
- So, 30/21 + 6/81 = 284/189
In mixed form: 195/189
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/21+6/81 30/21+12/81 30/42+6/81 90/21+6/81 30/21+18/81 30/63+6/81 30/21+30/81 30/21+42/81