Add 40/28 and 81/40
1st number: 1 12/28, 2nd number: 2 1/40
40/28 + 81/40 is 967/280.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 40 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 28 × 10 = 280,
40/28 = 40 × 10/28 × 10 = 400/280 - Likewise, for the 2nd fraction, since 40 × 7 = 280,
81/40 = 81 × 7/40 × 7 = 567/280 - Add the two like fractions:
400/280 + 567/280 = 400 + 567/280 = 967/280 - So, 40/28 + 81/40 = 967/280
In mixed form: 3127/280
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/28+81/40 40/56+81/40 40/28+81/80 40/84+81/40