Add 81/7 and 15/54
1st number: 11 4/7, 2nd number: 15/54
81/7 + 15/54 is 1493/126.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 54 is 378
Next, find the equivalent fraction of both fractional numbers with denominator 378 - For the 1st fraction, since 7 × 54 = 378,
81/7 = 81 × 54/7 × 54 = 4374/378 - Likewise, for the 2nd fraction, since 54 × 7 = 378,
15/54 = 15 × 7/54 × 7 = 105/378 - Add the two like fractions:
4374/378 + 105/378 = 4374 + 105/378 = 4479/378 - 4479/378 simplified gives 1493/126
- So, 81/7 + 15/54 = 1493/126
In mixed form: 11107/126
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/7+30/54 81/14+15/54 81/7+45/54 81/21+15/54 81/7+75/54 81/35+15/54 81/49+15/54