Add 81/7 and 28/54
1st number: 11 4/7, 2nd number: 28/54
81/7 + 28/54 is 2285/189.
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,
28/54 = 28 × 7/54 × 7 = 196/378 - Add the two like fractions:
4374/378 + 196/378 = 4374 + 196/378 = 4570/378 - 4570/378 simplified gives 2285/189
- So, 81/7 + 28/54 = 2285/189
In mixed form: 1217/189
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/7+56/54 81/14+28/54 81/7+84/54 81/21+28/54 81/35+28/54 81/49+28/54