Add 81/18 and 10/28
1st number: 4 9/18, 2nd number: 10/28
81/18 + 10/28 is 34/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 28 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 18 × 14 = 252,
81/18 = 81 × 14/18 × 14 = 1134/252 - Likewise, for the 2nd fraction, since 28 × 9 = 252,
10/28 = 10 × 9/28 × 9 = 90/252 - Add the two like fractions:
1134/252 + 90/252 = 1134 + 90/252 = 1224/252 - 1224/252 simplified gives 34/7
- So, 81/18 + 10/28 = 34/7
In mixed form: 46/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/18+20/28 81/36+10/28 81/18+10/56 81/18+30/28 81/54+10/28 81/18+10/84 81/18+50/28 81/90+10/28 81/18+70/28