Add 50/21 and 80/72
1st number: 2 8/21, 2nd number: 1 8/72
50/21 + 80/72 is 220/63.
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,
80/72 = 80 × 7/72 × 7 = 560/504 - Add the two like fractions:
1200/504 + 560/504 = 1200 + 560/504 = 1760/504 - 1760/504 simplified gives 220/63
- So, 50/21 + 80/72 = 220/63
In mixed form: 331/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 50/42+80/72 50/63+80/72