Add 35/12 and 56/21
1st number: 2 11/12, 2nd number: 2 14/21
35/12 + 56/21 is 67/12.
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,
35/12 = 35 × 7/12 × 7 = 245/84 - Likewise, for the 2nd fraction, since 21 × 4 = 84,
56/21 = 56 × 4/21 × 4 = 224/84 - Add the two like fractions:
245/84 + 224/84 = 245 + 224/84 = 469/84 - 469/84 simplified gives 67/12
- So, 35/12 + 56/21 = 67/12
In mixed form: 57/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/12+56/21 35/24+56/21 35/12+56/42 35/36+56/21 35/12+56/63 35/60+56/21 35/84+56/21