Add 81/28 and 15/9
1st number: 2 25/28, 2nd number: 1 6/9
81/28 + 15/9 is 383/84.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 9 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 28 × 9 = 252,
81/28 = 81 × 9/28 × 9 = 729/252 - Likewise, for the 2nd fraction, since 9 × 28 = 252,
15/9 = 15 × 28/9 × 28 = 420/252 - Add the two like fractions:
729/252 + 420/252 = 729 + 420/252 = 1149/252 - 1149/252 simplified gives 383/84
- So, 81/28 + 15/9 = 383/84
In mixed form: 447/84
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/28+30/9 81/56+15/9 81/28+15/18 81/28+45/9 81/84+15/9 81/28+15/27 81/28+75/9 81/28+15/45 81/28+15/63