Add 72/24 and 14/21
1st number: 3 0/24, 2nd number: 14/21
72/24 + 14/21 is 11/3.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 24 and 21 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 24 × 7 = 168,
72/24 = 72 × 7/24 × 7 = 504/168 - Likewise, for the 2nd fraction, since 21 × 8 = 168,
14/21 = 14 × 8/21 × 8 = 112/168 - Add the two like fractions:
504/168 + 112/168 = 504 + 112/168 = 616/168 - 616/168 simplified gives 11/3
- So, 72/24 + 14/21 = 11/3
In mixed form: 32/3
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/24+28/21 72/48+14/21 72/24+14/42 72/24+42/21 72/24+14/63 72/24+70/21 72/24+98/21