Add 60/56 and 21/40
1st number: 1 4/56, 2nd number: 21/40
60/56 + 21/40 is 447/280.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 40 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 56 × 5 = 280,
60/56 = 60 × 5/56 × 5 = 300/280 - Likewise, for the 2nd fraction, since 40 × 7 = 280,
21/40 = 21 × 7/40 × 7 = 147/280 - Add the two like fractions:
300/280 + 147/280 = 300 + 147/280 = 447/280 - So, 60/56 + 21/40 = 447/280
In mixed form: 1167/280
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/56+42/40 60/56+21/80 60/56+63/40