Add 81/42 and 2/27
1st number: 1 39/42, 2nd number: 2/27
81/42 + 2/27 is 757/378.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 27 is 378
Next, find the equivalent fraction of both fractional numbers with denominator 378 - For the 1st fraction, since 42 × 9 = 378,
81/42 = 81 × 9/42 × 9 = 729/378 - Likewise, for the 2nd fraction, since 27 × 14 = 378,
2/27 = 2 × 14/27 × 14 = 28/378 - Add the two like fractions:
729/378 + 28/378 = 729 + 28/378 = 757/378 - So, 81/42 + 2/27 = 757/378
In mixed form: 21/378
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/42+4/27 81/84+2/27 81/42+2/54 81/42+6/27 81/42+2/81 81/42+10/27 81/42+14/27