Add 10/70 and 81/28
1st number: 10/70, 2nd number: 2 25/28
10/70 + 81/28 is 85/28.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 28 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 70 × 2 = 140,
10/70 = 10 × 2/70 × 2 = 20/140 - Likewise, for the 2nd fraction, since 28 × 5 = 140,
81/28 = 81 × 5/28 × 5 = 405/140 - Add the two like fractions:
20/140 + 405/140 = 20 + 405/140 = 425/140 - 425/140 simplified gives 85/28
- So, 10/70 + 81/28 = 85/28
In mixed form: 31/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/70+81/28 10/70+81/56 30/70+81/28 10/70+81/84 50/70+81/28