Add 15/56 and 42/35
1st number: 15/56, 2nd number: 1 7/35
15/56 + 42/35 is 411/280.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 35 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 35 × 8 = 280,
42/35 = 42 × 8/35 × 8 = 336/280 - Add the two like fractions:
75/280 + 336/280 = 75 + 336/280 = 411/280 - So, 15/56 + 42/35 = 411/280
In mixed form: 1131/280
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/56+42/35 15/56+84/35 15/56+42/70 45/56+42/35 75/56+42/35