Add 30/7 and 15/9
1st number: 4 2/7, 2nd number: 1 6/9
30/7 + 15/9 is 125/21.
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,
30/7 = 30 × 9/7 × 9 = 270/63 - Likewise, for the 2nd fraction, since 9 × 7 = 63,
15/9 = 15 × 7/9 × 7 = 105/63 - Add the two like fractions:
270/63 + 105/63 = 270 + 105/63 = 375/63 - 375/63 simplified gives 125/21
- So, 30/7 + 15/9 = 125/21
In mixed form: 520/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/7+15/9 30/7+30/9 30/14+15/9 30/7+15/18 90/7+15/9 30/7+45/9 30/21+15/9 30/7+15/27 30/7+75/9 30/35+15/9 30/7+15/45 30/49+15/9 30/7+15/63