Add 5/54 and 54/21
1st number: 5/54, 2nd number: 2 12/21
5/54 + 54/21 is 1007/378.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 54 and 21 is 378
Next, find the equivalent fraction of both fractional numbers with denominator 378 - For the 1st fraction, since 54 × 7 = 378,
5/54 = 5 × 7/54 × 7 = 35/378 - Likewise, for the 2nd fraction, since 21 × 18 = 378,
54/21 = 54 × 18/21 × 18 = 972/378 - Add the two like fractions:
35/378 + 972/378 = 35 + 972/378 = 1007/378 - So, 5/54 + 54/21 = 1007/378
In mixed form: 2251/378
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/54+54/21 5/54+54/42 15/54+54/21 5/54+54/63 25/54+54/21 35/54+54/21