Add 81/28 and 12/35
1st number: 2 25/28, 2nd number: 12/35
81/28 + 12/35 is 453/140.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 35 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 28 × 5 = 140,
81/28 = 81 × 5/28 × 5 = 405/140 - Likewise, for the 2nd fraction, since 35 × 4 = 140,
12/35 = 12 × 4/35 × 4 = 48/140 - Add the two like fractions:
405/140 + 48/140 = 405 + 48/140 = 453/140 - So, 81/28 + 12/35 = 453/140
In mixed form: 333/140
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/28+24/35 81/56+12/35 81/28+12/70 81/28+36/35 81/84+12/35 81/28+60/35 81/28+84/35