Add 12/15 and 56/28
1st number: 12/15, 2nd number: 2 0/28
12/15 + 56/28 is 14/5.
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,
12/15 = 12 × 28/15 × 28 = 336/420 - Likewise, for the 2nd fraction, since 28 × 15 = 420,
56/28 = 56 × 15/28 × 15 = 840/420 - Add the two like fractions:
336/420 + 840/420 = 336 + 840/420 = 1176/420 - 1176/420 simplified gives 14/5
- So, 12/15 + 56/28 = 14/5
In mixed form: 24/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/15+56/28 12/30+56/28 36/15+56/28 12/45+56/28 12/15+56/84 60/15+56/28 12/75+56/28 84/15+56/28