Add 60/18 and 21/72
1st number: 3 6/18, 2nd number: 21/72
60/18 + 21/72 is 29/8.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 72 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 18 × 4 = 72,
60/18 = 60 × 4/18 × 4 = 240/72 - Likewise, for the 2nd fraction, since 72 × 1 = 72,
21/72 = 21 × 1/72 × 1 = 21/72 - Add the two like fractions:
240/72 + 21/72 = 240 + 21/72 = 261/72 - 261/72 simplified gives 29/8
- So, 60/18 + 21/72 = 29/8
In mixed form: 35/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/18+42/72 60/36+21/72 60/18+63/72 60/54+21/72 60/90+21/72