Add 21/60 and 1/18
21/60 + 1/18 is 73/180.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 60 and 18 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 60 × 3 = 180,
21/60 = 21 × 3/60 × 3 = 63/180 - Likewise, for the 2nd fraction, since 18 × 10 = 180,
1/18 = 1 × 10/18 × 10 = 10/180 - Add the two like fractions:
63/180 + 10/180 = 63 + 10/180 = 73/180 - So, 21/60 + 1/18 = 73/180
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/60+1/18 21/60+2/18 21/60+1/36 63/60+1/18 21/60+3/18 21/60+1/54 21/60+5/18 21/60+1/90 21/60+7/18