Add 35/7 and 81/20
1st number: 5 0/7, 2nd number: 4 1/20
35/7 + 81/20 is 181/20.
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,
35/7 = 35 × 20/7 × 20 = 700/140 - Likewise, for the 2nd fraction, since 20 × 7 = 140,
81/20 = 81 × 7/20 × 7 = 567/140 - Add the two like fractions:
700/140 + 567/140 = 700 + 567/140 = 1267/140 - 1267/140 simplified gives 181/20
- So, 35/7 + 81/20 = 181/20
In mixed form: 91/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/7+81/20 35/14+81/20 35/7+81/40 35/21+81/20 35/7+81/60 35/49+81/20