Add 14/24 and 42/21
1st number: 14/24, 2nd number: 2 0/21
14/24 + 42/21 is 31/12.
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,
14/24 = 14 × 7/24 × 7 = 98/168 - Likewise, for the 2nd fraction, since 21 × 8 = 168,
42/21 = 42 × 8/21 × 8 = 336/168 - Add the two like fractions:
98/168 + 336/168 = 98 + 336/168 = 434/168 - 434/168 simplified gives 31/12
- So, 14/24 + 42/21 = 31/12
In mixed form: 27/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 28/24+42/21 14/24+84/21 14/48+42/21 42/24+42/21 14/72+42/21 14/24+42/63 70/24+42/21 98/24+42/21