Add 28/7 and 2/81
1st number: 4 0/7, 2nd number: 2/81
28/7 + 2/81 is 326/81.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 81 is 567
Next, find the equivalent fraction of both fractional numbers with denominator 567 - For the 1st fraction, since 7 × 81 = 567,
28/7 = 28 × 81/7 × 81 = 2268/567 - Likewise, for the 2nd fraction, since 81 × 7 = 567,
2/81 = 2 × 7/81 × 7 = 14/567 - Add the two like fractions:
2268/567 + 14/567 = 2268 + 14/567 = 2282/567 - 2282/567 simplified gives 326/81
- So, 28/7 + 2/81 = 326/81
In mixed form: 42/81
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/7+2/81 28/7+4/81 28/14+2/81 84/7+2/81 28/7+6/81 28/21+2/81 28/7+10/81 28/35+2/81 28/7+14/81 28/49+2/81