Add 30/21 and 54/48
1st number: 1 9/21, 2nd number: 1 6/48
30/21 + 54/48 is 143/56.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 48 is 336
Next, find the equivalent fraction of both fractional numbers with denominator 336 - For the 1st fraction, since 21 × 16 = 336,
30/21 = 30 × 16/21 × 16 = 480/336 - Likewise, for the 2nd fraction, since 48 × 7 = 336,
54/48 = 54 × 7/48 × 7 = 378/336 - Add the two like fractions:
480/336 + 378/336 = 480 + 378/336 = 858/336 - 858/336 simplified gives 143/56
- So, 30/21 + 54/48 = 143/56
In mixed form: 231/56
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/21+54/48 30/42+54/48 30/21+54/96 90/21+54/48 30/63+54/48