Add 2/7 and 2/8
2/7 + 2/8 is 15/28.
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,
2/7 = 2 × 8/7 × 8 = 16/56 - Likewise, for the 2nd fraction, since 8 × 7 = 56,
2/8 = 2 × 7/8 × 7 = 14/56 - Add the two like fractions:
16/56 + 14/56 = 16 + 14/56 = 30/56 - 30/56 simplified gives 15/28
- So, 2/7 + 2/8 = 15/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 4/7+2/8 2/7+4/8 2/14+2/8 2/7+2/16 6/7+2/8 2/7+6/8 2/21+2/8 2/7+2/24 10/7+2/8 2/7+10/8 2/35+2/8 2/7+2/40 14/7+2/8 2/7+14/8 2/49+2/8 2/7+2/56