Add 81/21 and 27/48
1st number: 3 18/21, 2nd number: 27/48
81/21 + 27/48 is 495/112.
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,
81/21 = 81 × 16/21 × 16 = 1296/336 - Likewise, for the 2nd fraction, since 48 × 7 = 336,
27/48 = 27 × 7/48 × 7 = 189/336 - Add the two like fractions:
1296/336 + 189/336 = 1296 + 189/336 = 1485/336 - 1485/336 simplified gives 495/112
- So, 81/21 + 27/48 = 495/112
In mixed form: 447/112
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/21+54/48 81/42+27/48 81/21+27/96 81/21+81/48 81/63+27/48