Add 3/7 and 6/20
3/7 + 6/20 is 51/70.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 20 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 7 × 20 = 140,
3/7 = 3 × 20/7 × 20 = 60/140 - Likewise, for the 2nd fraction, since 20 × 7 = 140,
6/20 = 6 × 7/20 × 7 = 42/140 - Add the two like fractions:
60/140 + 42/140 = 60 + 42/140 = 102/140 - 102/140 simplified gives 51/70
- So, 3/7 + 6/20 = 51/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/7+6/20 3/7+12/20 3/14+6/20 3/7+6/40 9/7+6/20 3/7+18/20 3/21+6/20 3/7+6/60 15/7+6/20 3/7+30/20 3/35+6/20 21/7+6/20 3/7+42/20 3/49+6/20