Add 28/20 and 5/15
1st number: 1 8/20, 2nd number: 5/15
28/20 + 5/15 is 26/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 15 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 20 × 3 = 60,
28/20 = 28 × 3/20 × 3 = 84/60 - Likewise, for the 2nd fraction, since 15 × 4 = 60,
5/15 = 5 × 4/15 × 4 = 20/60 - Add the two like fractions:
84/60 + 20/60 = 84 + 20/60 = 104/60 - 104/60 simplified gives 26/15
- So, 28/20 + 5/15 = 26/15
In mixed form: 111/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/20+5/15 28/20+10/15 28/40+5/15 28/20+5/30 84/20+5/15 28/60+5/15 28/20+5/45 28/20+25/15 28/20+5/75 28/20+35/15