Add 15/9 and 5/7
1st number: 1 6/9, 2nd number: 5/7
15/9 + 5/7 is 50/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 7 is 63
Next, find the equivalent fraction of both fractional numbers with denominator 63 - For the 1st fraction, since 9 × 7 = 63,
15/9 = 15 × 7/9 × 7 = 105/63 - Likewise, for the 2nd fraction, since 7 × 9 = 63,
5/7 = 5 × 9/7 × 9 = 45/63 - Add the two like fractions:
105/63 + 45/63 = 105 + 45/63 = 150/63 - 150/63 simplified gives 50/21
- So, 15/9 + 5/7 = 50/21
In mixed form: 28/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/9+5/7 15/9+10/7 15/18+5/7 15/9+5/14 45/9+5/7 15/9+15/7 15/27+5/7 15/9+5/21 75/9+5/7 15/9+25/7 15/45+5/7 15/9+5/35 15/9+35/7 15/63+5/7 15/9+5/49