Add 28/15 and 40/8
1st number: 1 13/15, 2nd number: 5 0/8
28/15 + 40/8 is 103/15.
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,
40/8 = 40 × 15/8 × 15 = 600/120 - Add the two like fractions:
224/120 + 600/120 = 224 + 600/120 = 824/120 - 824/120 simplified gives 103/15
- So, 28/15 + 40/8 = 103/15
In mixed form: 613/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/15+40/8 28/15+80/8 28/30+40/8 28/15+40/16 84/15+40/8 28/45+40/8 28/15+40/24 28/75+40/8 28/15+40/56