Add 54/3 and 42/81
1st number: 18 0/3, 2nd number: 42/81
54/3 + 42/81 is 500/27.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 81 is 81
Next, find the equivalent fraction of both fractional numbers with denominator 81 - For the 1st fraction, since 3 × 27 = 81,
54/3 = 54 × 27/3 × 27 = 1458/81 - Likewise, for the 2nd fraction, since 81 × 1 = 81,
42/81 = 42 × 1/81 × 1 = 42/81 - Add the two like fractions:
1458/81 + 42/81 = 1458 + 42/81 = 1500/81 - 1500/81 simplified gives 500/27
- So, 54/3 + 42/81 = 500/27
In mixed form: 1814/27
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/3+84/81 54/6+42/81 54/9+42/81 54/15+42/81 54/21+42/81