Add 7/15 and 15/7
1st number: 7/15, 2nd number: 2 1/7
7/15 + 15/7 is 274/105.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 7 is 105
Next, find the equivalent fraction of both fractional numbers with denominator 105 - For the 1st fraction, since 15 × 7 = 105,
7/15 = 7 × 7/15 × 7 = 49/105 - Likewise, for the 2nd fraction, since 7 × 15 = 105,
15/7 = 15 × 15/7 × 15 = 225/105 - Add the two like fractions:
49/105 + 225/105 = 49 + 225/105 = 274/105 - So, 7/15 + 15/7 = 274/105
In mixed form: 264/105
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/15+15/7 7/15+30/7 7/30+15/7 7/15+15/14 21/15+15/7 7/15+45/7 7/45+15/7 7/15+15/21 35/15+15/7 7/15+75/7 7/75+15/7 7/15+15/35 49/15+15/7 7/15+15/49