Add 56/28 and 3/15
1st number: 2 0/28, 2nd number: 3/15
56/28 + 3/15 is 11/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 15 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 28 × 15 = 420,
56/28 = 56 × 15/28 × 15 = 840/420 - Likewise, for the 2nd fraction, since 15 × 28 = 420,
3/15 = 3 × 28/15 × 28 = 84/420 - Add the two like fractions:
840/420 + 84/420 = 840 + 84/420 = 924/420 - 924/420 simplified gives 11/5
- So, 56/28 + 3/15 = 11/5
In mixed form: 21/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/28+6/15 56/28+3/30 56/28+9/15 56/84+3/15 56/28+3/45 56/28+3/75 56/28+21/15