Add 72/21 and 15/48
1st number: 3 9/21, 2nd number: 15/48
72/21 + 15/48 is 419/112.
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,
72/21 = 72 × 16/21 × 16 = 1152/336 - Likewise, for the 2nd fraction, since 48 × 7 = 336,
15/48 = 15 × 7/48 × 7 = 105/336 - Add the two like fractions:
1152/336 + 105/336 = 1152 + 105/336 = 1257/336 - 1257/336 simplified gives 419/112
- So, 72/21 + 15/48 = 419/112
In mixed form: 383/112
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/21+30/48 72/42+15/48 72/21+15/96 72/21+45/48 72/63+15/48 72/21+75/48