Add 4/14 and 81/40
1st number: 4/14, 2nd number: 2 1/40
4/14 + 81/40 is 647/280.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 14 and 40 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 14 × 20 = 280,
4/14 = 4 × 20/14 × 20 = 80/280 - Likewise, for the 2nd fraction, since 40 × 7 = 280,
81/40 = 81 × 7/40 × 7 = 567/280 - Add the two like fractions:
80/280 + 567/280 = 80 + 567/280 = 647/280 - So, 4/14 + 81/40 = 647/280
In mixed form: 287/280
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/14+81/40 4/28+81/40 4/14+81/80 12/14+81/40 4/42+81/40 20/14+81/40 4/70+81/40 28/14+81/40 4/98+81/40