Add 4/7 and 81/40
1st number: 4/7, 2nd number: 2 1/40
4/7 + 81/40 is 727/280.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 40 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 7 × 40 = 280,
4/7 = 4 × 40/7 × 40 = 160/280 - Likewise, for the 2nd fraction, since 40 × 7 = 280,
81/40 = 81 × 7/40 × 7 = 567/280 - Add the two like fractions:
160/280 + 567/280 = 160 + 567/280 = 727/280 - So, 4/7 + 81/40 = 727/280
In mixed form: 2167/280
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/7+81/40 4/14+81/40 4/7+81/80 12/7+81/40 4/21+81/40 20/7+81/40 4/35+81/40 28/7+81/40 4/49+81/40