Add 72/50 and 21/84
1st number: 1 22/50, 2nd number: 21/84
72/50 + 21/84 is 169/100.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 50 and 84 is 2100
Next, find the equivalent fraction of both fractional numbers with denominator 2100 - For the 1st fraction, since 50 × 42 = 2100,
72/50 = 72 × 42/50 × 42 = 3024/2100 - Likewise, for the 2nd fraction, since 84 × 25 = 2100,
21/84 = 21 × 25/84 × 25 = 525/2100 - Add the two like fractions:
3024/2100 + 525/2100 = 3024 + 525/2100 = 3549/2100 - 3549/2100 simplified gives 169/100
- So, 72/50 + 21/84 = 169/100
In mixed form: 169/100
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/50+42/84 72/50+63/84