Add 60/90 and 21/18
1st number: 60/90, 2nd number: 1 3/18
60/90 + 21/18 is 11/6.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 18 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 90 × 1 = 90,
60/90 = 60 × 1/90 × 1 = 60/90 - Likewise, for the 2nd fraction, since 18 × 5 = 90,
21/18 = 21 × 5/18 × 5 = 105/90 - Add the two like fractions:
60/90 + 105/90 = 60 + 105/90 = 165/90 - 165/90 simplified gives 11/6
- So, 60/90 + 21/18 = 11/6
In mixed form: 15/6
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/90+42/18 60/90+21/36 60/90+63/18 60/90+21/54 60/90+21/90