Add 21/60 and 4/5
21/60 + 4/5 is 23/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 60 and 5 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 60 × 1 = 60,
21/60 = 21 × 1/60 × 1 = 21/60 - Likewise, for the 2nd fraction, since 5 × 12 = 60,
4/5 = 4 × 12/5 × 12 = 48/60 - Add the two like fractions:
21/60 + 48/60 = 21 + 48/60 = 69/60 - 69/60 simplified gives 23/20
- So, 21/60 + 4/5 = 23/20
In mixed form: 13/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/60+4/5 21/60+8/5 21/60+4/10 63/60+4/5 21/60+12/5 21/60+4/15 21/60+20/5 21/60+4/25 21/60+28/5 21/60+4/35