Add 28/15 and 4/8
1st number: 1 13/15, 2nd number: 4/8
28/15 + 4/8 is 71/30.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 8 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 15 × 8 = 120,
28/15 = 28 × 8/15 × 8 = 224/120 - Likewise, for the 2nd fraction, since 8 × 15 = 120,
4/8 = 4 × 15/8 × 15 = 60/120 - Add the two like fractions:
224/120 + 60/120 = 224 + 60/120 = 284/120 - 284/120 simplified gives 71/30
- So, 28/15 + 4/8 = 71/30
In mixed form: 211/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/15+4/8 28/30+4/8 28/15+4/16 84/15+4/8 28/15+12/8 28/45+4/8 28/15+4/24 28/15+20/8 28/75+4/8 28/15+4/40 28/15+28/8 28/15+4/56