Add 2/81 and 80/42
1st number: 2/81, 2nd number: 1 38/42
2/81 + 80/42 is 1094/567.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 42 is 1134
Next, find the equivalent fraction of both fractional numbers with denominator 1134 - For the 1st fraction, since 81 × 14 = 1134,
2/81 = 2 × 14/81 × 14 = 28/1134 - Likewise, for the 2nd fraction, since 42 × 27 = 1134,
80/42 = 80 × 27/42 × 27 = 2160/1134 - Add the two like fractions:
28/1134 + 2160/1134 = 28 + 2160/1134 = 2188/1134 - 2188/1134 simplified gives 1094/567
- So, 2/81 + 80/42 = 1094/567
In mixed form: 1527/567
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 4/81+80/42 2/81+80/84 6/81+80/42 10/81+80/42 14/81+80/42