Add 18/7 and 5/81
1st number: 2 4/7, 2nd number: 5/81
18/7 + 5/81 is 1493/567.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 81 is 567
Next, find the equivalent fraction of both fractional numbers with denominator 567 - For the 1st fraction, since 7 × 81 = 567,
18/7 = 18 × 81/7 × 81 = 1458/567 - Likewise, for the 2nd fraction, since 81 × 7 = 567,
5/81 = 5 × 7/81 × 7 = 35/567 - Add the two like fractions:
1458/567 + 35/567 = 1458 + 35/567 = 1493/567 - So, 18/7 + 5/81 = 1493/567
In mixed form: 2359/567
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/7+5/81 18/7+10/81 18/14+5/81 54/7+5/81 18/7+15/81 18/21+5/81 90/7+5/81 18/7+25/81 18/35+5/81 18/7+35/81 18/49+5/81