Add 72/14 and 6/21
1st number: 5 2/14, 2nd number: 6/21
72/14 + 6/21 is 38/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 14 and 21 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 14 × 3 = 42,
72/14 = 72 × 3/14 × 3 = 216/42 - Likewise, for the 2nd fraction, since 21 × 2 = 42,
6/21 = 6 × 2/21 × 2 = 12/42 - Add the two like fractions:
216/42 + 12/42 = 216 + 12/42 = 228/42 - 228/42 simplified gives 38/7
- So, 72/14 + 6/21 = 38/7
In mixed form: 53/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/14+12/21 72/28+6/21 72/14+6/42 72/14+18/21 72/42+6/21 72/14+6/63 72/14+30/21 72/70+6/21 72/14+42/21 72/98+6/21