Add 1/7 and 4/20
1/7 + 4/20 is 12/35.
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,
1/7 = 1 × 20/7 × 20 = 20/140 - Likewise, for the 2nd fraction, since 20 × 7 = 140,
4/20 = 4 × 7/20 × 7 = 28/140 - Add the two like fractions:
20/140 + 28/140 = 20 + 28/140 = 48/140 - 48/140 simplified gives 12/35
- So, 1/7 + 4/20 = 12/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/7+4/20 1/7+8/20 1/14+4/20 1/7+4/40 3/7+4/20 1/7+12/20 1/21+4/20 1/7+4/60 5/7+4/20 1/35+4/20 1/7+28/20 1/49+4/20