Add 81/54 and 42/63
1st number: 1 27/54, 2nd number: 42/63
81/54 + 42/63 is 13/6.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 54 and 63 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 63 × 6 = 378,
42/63 = 42 × 6/63 × 6 = 252/378 - Add the two like fractions:
567/378 + 252/378 = 567 + 252/378 = 819/378 - 819/378 simplified gives 13/6
- So, 81/54 + 42/63 = 13/6
In mixed form: 21/6
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/54+84/63