Add 56/12 and 25/21
1st number: 4 8/12, 2nd number: 1 4/21
56/12 + 25/21 is 41/7.
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,
56/12 = 56 × 7/12 × 7 = 392/84 - Likewise, for the 2nd fraction, since 21 × 4 = 84,
25/21 = 25 × 4/21 × 4 = 100/84 - Add the two like fractions:
392/84 + 100/84 = 392 + 100/84 = 492/84 - 492/84 simplified gives 41/7
- So, 56/12 + 25/21 = 41/7
In mixed form: 56/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/12+50/21 56/24+25/21 56/12+25/42 56/12+75/21 56/36+25/21 56/12+25/63 56/60+25/21 56/84+25/21