Add 10/21 and 56/54
1st number: 10/21, 2nd number: 1 2/54
10/21 + 56/54 is 286/189.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 54 is 378
Next, find the equivalent fraction of both fractional numbers with denominator 378 - For the 1st fraction, since 21 × 18 = 378,
10/21 = 10 × 18/21 × 18 = 180/378 - Likewise, for the 2nd fraction, since 54 × 7 = 378,
56/54 = 56 × 7/54 × 7 = 392/378 - Add the two like fractions:
180/378 + 392/378 = 180 + 392/378 = 572/378 - 572/378 simplified gives 286/189
- So, 10/21 + 56/54 = 286/189
In mixed form: 197/189
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/21+56/54 10/42+56/54 30/21+56/54 10/63+56/54 50/21+56/54 70/21+56/54