Add 9/20 and 28/60
9/20 + 28/60 is 11/12.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 60 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 20 × 3 = 60,
9/20 = 9 × 3/20 × 3 = 27/60 - Likewise, for the 2nd fraction, since 60 × 1 = 60,
28/60 = 28 × 1/60 × 1 = 28/60 - Add the two like fractions:
27/60 + 28/60 = 27 + 28/60 = 55/60 - 55/60 simplified gives 11/12
- So, 9/20 + 28/60 = 11/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/20+28/60 9/20+56/60 9/40+28/60 27/20+28/60 9/20+84/60 9/60+28/60 45/20+28/60 63/20+28/60