Add 15/56 and 54/40
1st number: 15/56, 2nd number: 1 14/40
15/56 + 54/40 is 453/280.
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,
15/56 = 15 × 5/56 × 5 = 75/280 - Likewise, for the 2nd fraction, since 40 × 7 = 280,
54/40 = 54 × 7/40 × 7 = 378/280 - Add the two like fractions:
75/280 + 378/280 = 75 + 378/280 = 453/280 - So, 15/56 + 54/40 = 453/280
In mixed form: 1173/280
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/56+54/40 15/56+54/80 45/56+54/40 75/56+54/40