Add 15/7 and 30/8
1st number: 2 1/7, 2nd number: 3 6/8
15/7 + 30/8 is 165/28.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 8 is 56
Next, find the equivalent fraction of both fractional numbers with denominator 56 - For the 1st fraction, since 7 × 8 = 56,
15/7 = 15 × 8/7 × 8 = 120/56 - Likewise, for the 2nd fraction, since 8 × 7 = 56,
30/8 = 30 × 7/8 × 7 = 210/56 - Add the two like fractions:
120/56 + 210/56 = 120 + 210/56 = 330/56 - 330/56 simplified gives 165/28
- So, 15/7 + 30/8 = 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: 30/7+30/8 15/7+60/8 15/14+30/8 15/7+30/16 45/7+30/8 15/7+90/8 15/21+30/8 15/7+30/24 75/7+30/8 15/35+30/8 15/7+30/40 15/49+30/8 15/7+30/56