Add 15/7 and 10/81
1st number: 2 1/7, 2nd number: 10/81
15/7 + 10/81 is 1285/567.
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,
15/7 = 15 × 81/7 × 81 = 1215/567 - Likewise, for the 2nd fraction, since 81 × 7 = 567,
10/81 = 10 × 7/81 × 7 = 70/567 - Add the two like fractions:
1215/567 + 70/567 = 1215 + 70/567 = 1285/567 - So, 15/7 + 10/81 = 1285/567
In mixed form: 2151/567
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/7+10/81 15/7+20/81 15/14+10/81 45/7+10/81 15/7+30/81 15/21+10/81 75/7+10/81 15/7+50/81 15/35+10/81 15/7+70/81 15/49+10/81