Add 5/7 and 2/20
5/7 + 2/20 is 57/70.
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,
5/7 = 5 × 20/7 × 20 = 100/140 - Likewise, for the 2nd fraction, since 20 × 7 = 140,
2/20 = 2 × 7/20 × 7 = 14/140 - Add the two like fractions:
100/140 + 14/140 = 100 + 14/140 = 114/140 - 114/140 simplified gives 57/70
- So, 5/7 + 2/20 = 57/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/7+2/20 5/7+4/20 5/14+2/20 5/7+2/40 15/7+2/20 5/7+6/20 5/21+2/20 5/7+2/60 25/7+2/20 5/7+10/20 5/35+2/20 35/7+2/20 5/7+14/20 5/49+2/20