Add 28/15 and 20/4
1st number: 1 13/15, 2nd number: 5 0/4
28/15 + 20/4 is 103/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 4 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 15 × 4 = 60,
28/15 = 28 × 4/15 × 4 = 112/60 - Likewise, for the 2nd fraction, since 4 × 15 = 60,
20/4 = 20 × 15/4 × 15 = 300/60 - Add the two like fractions:
112/60 + 300/60 = 112 + 300/60 = 412/60 - 412/60 simplified gives 103/15
- So, 28/15 + 20/4 = 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+20/4 28/15+40/4 28/30+20/4 28/15+20/8 84/15+20/4 28/15+60/4 28/45+20/4 28/15+20/12 28/75+20/4 28/15+20/28