Add 40/15 and 28/20
1st number: 2 10/15, 2nd number: 1 8/20
40/15 + 28/20 is 61/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 20 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 15 × 4 = 60,
40/15 = 40 × 4/15 × 4 = 160/60 - Likewise, for the 2nd fraction, since 20 × 3 = 60,
28/20 = 28 × 3/20 × 3 = 84/60 - Add the two like fractions:
160/60 + 84/60 = 160 + 84/60 = 244/60 - 244/60 simplified gives 61/15
- So, 40/15 + 28/20 = 61/15
In mixed form: 41/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/15+28/20 40/15+56/20 40/30+28/20 40/15+28/40 40/15+84/20 40/45+28/20 40/15+28/60 40/75+28/20