Add 30/8 and 15/7
1st number: 3 6/8, 2nd number: 2 1/7
30/8 + 15/7 is 165/28.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 7 is 56
Next, find the equivalent fraction of both fractional numbers with denominator 56 - For the 1st fraction, since 8 × 7 = 56,
30/8 = 30 × 7/8 × 7 = 210/56 - Likewise, for the 2nd fraction, since 7 × 8 = 56,
15/7 = 15 × 8/7 × 8 = 120/56 - Add the two like fractions:
210/56 + 120/56 = 210 + 120/56 = 330/56 - 330/56 simplified gives 165/28
- So, 30/8 + 15/7 = 165/28
In mixed form: 525/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/8+15/7 30/8+30/7 30/16+15/7 30/8+15/14 90/8+15/7 30/8+45/7 30/24+15/7 30/8+15/21 30/8+75/7 30/40+15/7 30/8+15/35 30/56+15/7 30/8+15/49