Add 21/60 and 3/20
21/60 + 3/20 is 1/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 60 and 20 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 20 × 3 = 60,
3/20 = 3 × 3/20 × 3 = 9/60 - Add the two like fractions:
21/60 + 9/60 = 21 + 9/60 = 30/60 - 30/60 simplified gives 1/2
- So, 21/60 + 3/20 = 1/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/60+3/20 21/60+6/20 21/60+3/40 63/60+3/20 21/60+9/20 21/60+3/60 21/60+15/20 21/60+21/20