Add 4/12 and 56/21
1st number: 4/12, 2nd number: 2 14/21
4/12 + 56/21 is 3/1.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 21 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 12 × 7 = 84,
4/12 = 4 × 7/12 × 7 = 28/84 - Likewise, for the 2nd fraction, since 21 × 4 = 84,
56/21 = 56 × 4/21 × 4 = 224/84 - Add the two like fractions:
28/84 + 224/84 = 28 + 224/84 = 252/84 - 252/84 simplified gives 3/1
- So, 4/12 + 56/21 = 3/1
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/12+56/21 4/24+56/21 4/12+56/42 4/36+56/21 4/12+56/63 20/12+56/21 4/60+56/21 28/12+56/21 4/84+56/21