Add 5/42 and 54/12
1st number: 5/42, 2nd number: 4 6/12
5/42 + 54/12 is 97/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 12 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 42 × 2 = 84,
5/42 = 5 × 2/42 × 2 = 10/84 - Likewise, for the 2nd fraction, since 12 × 7 = 84,
54/12 = 54 × 7/12 × 7 = 378/84 - Add the two like fractions:
10/84 + 378/84 = 10 + 378/84 = 388/84 - 388/84 simplified gives 97/21
- So, 5/42 + 54/12 = 97/21
In mixed form: 413/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/42+54/12 5/84+54/12 5/42+54/24 15/42+54/12 5/42+54/36 25/42+54/12 5/42+54/60 35/42+54/12 5/42+54/84