Add 50/21 and 28/72
1st number: 2 8/21, 2nd number: 28/72
50/21 + 28/72 is 349/126.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 72 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 21 × 24 = 504,
50/21 = 50 × 24/21 × 24 = 1200/504 - Likewise, for the 2nd fraction, since 72 × 7 = 504,
28/72 = 28 × 7/72 × 7 = 196/504 - Add the two like fractions:
1200/504 + 196/504 = 1200 + 196/504 = 1396/504 - 1396/504 simplified gives 349/126
- So, 50/21 + 28/72 = 349/126
In mixed form: 297/126
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 50/21+56/72 50/42+28/72 50/21+84/72 50/63+28/72