Add 28/20 and 9/15
1st number: 1 8/20, 2nd number: 9/15
28/20 + 9/15 is 2/1.
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,
9/15 = 9 × 4/15 × 4 = 36/60 - Add the two like fractions:
84/60 + 36/60 = 84 + 36/60 = 120/60 - 120/60 simplified gives 2/1
- So, 28/20 + 9/15 = 2/1
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/20+9/15 28/20+18/15 28/40+9/15 28/20+9/30 84/20+9/15 28/20+27/15 28/60+9/15 28/20+9/45 28/20+45/15 28/20+9/75 28/20+63/15