Add 81/54 and 21/14
1st number: 1 27/54, 2nd number: 1 7/14
81/54 + 21/14 is 3/1.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 54 and 14 is 378
Next, find the equivalent fraction of both fractional numbers with denominator 378 - For the 1st fraction, since 54 × 7 = 378,
81/54 = 81 × 7/54 × 7 = 567/378 - Likewise, for the 2nd fraction, since 14 × 27 = 378,
21/14 = 21 × 27/14 × 27 = 567/378 - Add the two like fractions:
567/378 + 567/378 = 567 + 567/378 = 1134/378 - 1134/378 simplified gives 3/1
- So, 81/54 + 21/14 = 3/1
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/54+42/14 81/54+21/28 81/54+63/14 81/54+21/42 81/54+21/70 81/54+21/98