Add 81/45 and 15/84
1st number: 1 36/45, 2nd number: 15/84
81/45 + 15/84 is 277/140.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 84 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 45 × 28 = 1260,
81/45 = 81 × 28/45 × 28 = 2268/1260 - Likewise, for the 2nd fraction, since 84 × 15 = 1260,
15/84 = 15 × 15/84 × 15 = 225/1260 - Add the two like fractions:
2268/1260 + 225/1260 = 2268 + 225/1260 = 2493/1260 - 2493/1260 simplified gives 277/140
- So, 81/45 + 15/84 = 277/140
In mixed form: 1137/140
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/45+30/84 81/90+15/84 81/45+45/84 81/45+75/84