Add 3/7 and 12/8
1st number: 3/7, 2nd number: 1 4/8
3/7 + 12/8 is 27/14.
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,
3/7 = 3 × 8/7 × 8 = 24/56 - Likewise, for the 2nd fraction, since 8 × 7 = 56,
12/8 = 12 × 7/8 × 7 = 84/56 - Add the two like fractions:
24/56 + 84/56 = 24 + 84/56 = 108/56 - 108/56 simplified gives 27/14
- So, 3/7 + 12/8 = 27/14
In mixed form: 113/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/7+12/8 3/7+24/8 3/14+12/8 3/7+12/16 9/7+12/8 3/7+36/8 3/21+12/8 3/7+12/24 15/7+12/8 3/7+60/8 3/35+12/8 3/7+12/40 21/7+12/8 3/7+84/8 3/49+12/8 3/7+12/56