Add 72/48 and 2/21
1st number: 1 24/48, 2nd number: 2/21
72/48 + 2/21 is 67/42.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 48 and 21 is 336
Next, find the equivalent fraction of both fractional numbers with denominator 336 - For the 1st fraction, since 48 × 7 = 336,
72/48 = 72 × 7/48 × 7 = 504/336 - Likewise, for the 2nd fraction, since 21 × 16 = 336,
2/21 = 2 × 16/21 × 16 = 32/336 - Add the two like fractions:
504/336 + 32/336 = 504 + 32/336 = 536/336 - 536/336 simplified gives 67/42
- So, 72/48 + 2/21 = 67/42
In mixed form: 125/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/48+4/21 72/96+2/21 72/48+2/42 72/48+6/21 72/48+2/63 72/48+10/21 72/48+14/21