Add 56/15 and 8/28
1st number: 3 11/15, 2nd number: 8/28
56/15 + 8/28 is 422/105.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 28 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 15 × 28 = 420,
56/15 = 56 × 28/15 × 28 = 1568/420 - Likewise, for the 2nd fraction, since 28 × 15 = 420,
8/28 = 8 × 15/28 × 15 = 120/420 - Add the two like fractions:
1568/420 + 120/420 = 1568 + 120/420 = 1688/420 - 1688/420 simplified gives 422/105
- So, 56/15 + 8/28 = 422/105
In mixed form: 42/105
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/15+16/28 56/30+8/28 56/15+8/56 56/15+24/28 56/45+8/28 56/15+8/84 56/15+40/28 56/75+8/28 56/15+56/28