Add 2/20 and 81/7
1st number: 2/20, 2nd number: 11 4/7
2/20 + 81/7 is 817/70.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 7 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 20 × 7 = 140,
2/20 = 2 × 7/20 × 7 = 14/140 - Likewise, for the 2nd fraction, since 7 × 20 = 140,
81/7 = 81 × 20/7 × 20 = 1620/140 - Add the two like fractions:
14/140 + 1620/140 = 14 + 1620/140 = 1634/140 - 1634/140 simplified gives 817/70
- So, 2/20 + 81/7 = 817/70
In mixed form: 1147/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 4/20+81/7 2/40+81/7 2/20+81/14 6/20+81/7 2/60+81/7 2/20+81/21 10/20+81/7 2/20+81/35 14/20+81/7 2/20+81/49