Add 54/42 and 5/54
1st number: 1 12/42, 2nd number: 5/54
54/42 + 5/54 is 521/378.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 54 is 378
Next, find the equivalent fraction of both fractional numbers with denominator 378 - For the 1st fraction, since 42 × 9 = 378,
54/42 = 54 × 9/42 × 9 = 486/378 - Likewise, for the 2nd fraction, since 54 × 7 = 378,
5/54 = 5 × 7/54 × 7 = 35/378 - Add the two like fractions:
486/378 + 35/378 = 486 + 35/378 = 521/378 - So, 54/42 + 5/54 = 521/378
In mixed form: 1143/378
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/42+10/54 54/84+5/54 54/42+15/54 54/42+25/54 54/42+35/54