Add 63/56 and 21/10
1st number: 1 7/56, 2nd number: 2 1/10
63/56 + 21/10 is 129/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 10 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 56 × 5 = 280,
63/56 = 63 × 5/56 × 5 = 315/280 - Likewise, for the 2nd fraction, since 10 × 28 = 280,
21/10 = 21 × 28/10 × 28 = 588/280 - Add the two like fractions:
315/280 + 588/280 = 315 + 588/280 = 903/280 - 903/280 simplified gives 129/40
- So, 63/56 + 21/10 = 129/40
In mixed form: 39/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 63/56+42/10 63/56+21/20 63/56+63/10 63/56+21/30 63/56+21/50 63/56+21/70