Add 25/15 and 21/56
1st number: 1 10/15, 2nd number: 21/56
25/15 + 21/56 is 49/24.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 56 is 840
Next, find the equivalent fraction of both fractional numbers with denominator 840 - For the 1st fraction, since 15 × 56 = 840,
25/15 = 25 × 56/15 × 56 = 1400/840 - Likewise, for the 2nd fraction, since 56 × 15 = 840,
21/56 = 21 × 15/56 × 15 = 315/840 - Add the two like fractions:
1400/840 + 315/840 = 1400 + 315/840 = 1715/840 - 1715/840 simplified gives 49/24
- So, 25/15 + 21/56 = 49/24
In mixed form: 21/24
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 50/15+21/56 25/15+42/56 25/30+21/56 75/15+21/56 25/15+63/56 25/45+21/56 25/75+21/56