Add 16/7 and 81/20
1st number: 2 2/7, 2nd number: 4 1/20
16/7 + 81/20 is 887/140.
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,
16/7 = 16 × 20/7 × 20 = 320/140 - Likewise, for the 2nd fraction, since 20 × 7 = 140,
81/20 = 81 × 7/20 × 7 = 567/140 - Add the two like fractions:
320/140 + 567/140 = 320 + 567/140 = 887/140 - So, 16/7 + 81/20 = 887/140
In mixed form: 647/140
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 32/7+81/20 16/14+81/20 16/7+81/40 48/7+81/20 16/21+81/20 16/7+81/60 80/7+81/20 16/35+81/20 16/49+81/20