Add 3/7 and 15/9
1st number: 3/7, 2nd number: 1 6/9
3/7 + 15/9 is 44/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 9 is 63
Next, find the equivalent fraction of both fractional numbers with denominator 63 - For the 1st fraction, since 7 × 9 = 63,
3/7 = 3 × 9/7 × 9 = 27/63 - Likewise, for the 2nd fraction, since 9 × 7 = 63,
15/9 = 15 × 7/9 × 7 = 105/63 - Add the two like fractions:
27/63 + 105/63 = 27 + 105/63 = 132/63 - 132/63 simplified gives 44/21
- So, 3/7 + 15/9 = 44/21
In mixed form: 22/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/7+15/9 3/7+30/9 3/14+15/9 3/7+15/18 9/7+15/9 3/7+45/9 3/21+15/9 3/7+15/27 15/7+15/9 3/7+75/9 3/35+15/9 3/7+15/45 21/7+15/9 3/49+15/9 3/7+15/63