Add 28/14 and 20/15
1st number: 2 0/14, 2nd number: 1 5/15
28/14 + 20/15 is 10/3.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 14 and 15 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 14 × 15 = 210,
28/14 = 28 × 15/14 × 15 = 420/210 - Likewise, for the 2nd fraction, since 15 × 14 = 210,
20/15 = 20 × 14/15 × 14 = 280/210 - Add the two like fractions:
420/210 + 280/210 = 420 + 280/210 = 700/210 - 700/210 simplified gives 10/3
- So, 28/14 + 20/15 = 10/3
In mixed form: 31/3
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/14+20/15 28/14+40/15 28/14+20/30 84/14+20/15 28/14+60/15 28/42+20/15 28/14+20/45 28/70+20/15 28/14+20/75 28/98+20/15